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BCI Battery Group Size Chart (Group 24, 27, 31, etc)

BCI Battery Group Size Chart Guide

BCI Battery Group Size Chart categorizes car batteries by size. Group 27 and Group 31 differ in size and capacity, with Group 31 larger and higher-rated. Group 24 vs. Group 27 favors the latter in capacity and size. Group 51R suits compact cars. Group 35 offers higher capacity for larger vehicles. Various sizes like Group 47, 34, 48, 41, 65, 94R, and 78 cater to different needs.

Understanding Battery Group Size Chart

Battery group sizes correlate with physical dimensions and Amp Hours (AH) ratings. Choosing the right size is crucial to avoid power issues and wiring damage. Consult manuals or online sources for compatibility when replacing batteries to ensure optimal performance and safety.

  1. Understanding the Chart: The Battery Group Size Chart standardizes batteries based on dimensions, including length, width, height, and polarity. Each number corresponds to different size sets, with larger numbers indicating bigger batteries.
  2. Choosing the Right Size: Consult your owner’s manual or reliable online sources to identify the correct size for your devices.
  3. Impact of Incorrect Sizes: Choosing the wrong size can lead to problems. Small batteries may not provide sufficient power, while large ones could damage wiring.

When replacing an old battery with a new one, make sure the new battery is the same type as the old one or it’s confirmed to be a direct replacement. Also, check that the new battery has the same or better electrical capabilities.

BCI Group Numbers, and Dimensional Specifications

BCI Group Numbers categorize batteries by dimensions for proper fitment. Each number corresponds to specific size sets, indicating battery size. Dimensional specifications include length, width, height, and polarity. These standards ensure compatibility in various devices and vehicles, aiding in selecting the right battery.

BCI Group Size L x W x H (mm) L x W x H (inches) Redway Power Lithium Batteries
21 208 x 173 x 222 8 3/16 x 6 13/16 x 8 3/4
21R 208 x 173 x 222 8 3/16 x 6 13/16 x 8 3/4
22F 241 x 175 x 211 9 1/2 x 6 7/8 x 8 5/16
22HF 241 x 175 x 229 9 1/2 x 6 7/8 x 9
22NF 240 x 140 x 227 9 7/16 x 5 1/2 x 8 15/16
22R 229 x 175 x 211 9 x 6 7/8 x 8 5/16
24 260 x 173 x 225 10 1/4 x 6 13/16 x 8 7/8 12V75Ah
12V90Ah
12V100Ah
24V50Ah
24F 273 x 173 x 229 10 3/4 x 6 13/16 x 9
24H 260 x 173 x 238 10 1/4 x 6 13/16 x 9 3/8
24R 260 x 173 x 229 10 1/4 x 6 13/16 x 9
24T 260 x 173 x 248 10 1/4 x 6 13/16 x 9 3/4
25 230 x 175 x 225 9 1/16 x 6 7/8 x 8 7/8
26 208 x 173 x 197 8 3/16 x 6 13/16 x 7 3/4
26R 208 x 173 x 197 8 3/16 x 6 13/16 x 7 3/4
27 306 x 173 x 225 12 1/16 x 6 13/16 x 8 7/8 12V90Ah
27F 318 x 173 x 227 12 1/2 x 6 13/16 x 8 15/16
27H 298 x 173 x 235 11 3/4 x 6 13/16 x 9 1/4
29NF 330 x 140 x 227 13 x 5 1/2 x 8 15/16
31 330 x 173 x 240 13 x 6 13/16 x 9 7/16 12V100Ah
12V120Ah
12V150Ah
24V60Ah
33 338 x 173 x 238 13 5/16 x 6 13/16 x 9 3/8
34 260 x 173 x 200 10 1/4 x 6 13/16 x 7 7/8 12V75Ah-ST (Car Starting Battery)
34R 260 x 173 x 200 10 1/4 x 6 13/16 x 7 7/8
35 230 x 175 x 225 9 1/16 x 6 7/8 x 8 7/8
36R 263 x 183 x 206 10 3/8 x 7 3/16 x 8 1/8
40R 278 x 175 x 175 11 x 6 15/16 x 6 15/16
41 293 x 175 x 175 11 9/16 x 6 15/16 x 6 15/16
42 242 x 175 x 175 9 9/16 x 6 15/16 x 6 15/16
43 334 x 175 x 205 13 1/8 x 6 7/8 x 8 1/16
45 240 x 140 x 227 9 7/16 x 5 1/2 x 8 15/16
46 273 x 173 x 229 10 3/4 x 6 13/16 x 9
47 242 x 175 x 190 9 9/16 x 6 7/8 x 7 1/2
48 278 x 175 x 190 11 x 6 7/8 x 7 1/2
49 354 x 175 x 190 13 15/16 x 6 7/8 x 7 1/2
50 343 x 127 x 254 13 1/2 x 5 x 10
51 238 x 129 x 223 9 3/8 x 5 1/16 x 8 3/4
51R 238 x 129 x 223 9 3/8 x 5 1/16 x 8 3/4
52 186 x 147 x 210 7 5/16 x 5 13/16 x 8 1/4
53 330 x 119 x 210 13 x 4 11/16 x 8 1/4
54 186 x 154 x 212 7 5/16 x 6 1/16 x 8 3/8
55 218 x 154 x 212 8 9/16 x 6 1/16 x 8 3/8
56 254 x 154 x 212 10 x 6 1/16 x 8 3/8
57 205 x 183 x 177 8 1/16 x 7 3/16 x 6 15/16
58 255 x 183 x 177 10 1/16 x 7 3/16 x 6 15/16
58R 255 x 183 x 177 10 1/16 x 7 3/16 x 6 15/16
59 255 x 193 x 196 10 1/16 x 7 5/8 x 7 3/4
60 332 x 160 x 225 13 1/16 x 6 5/16 x 8 7/8
61 192 x 162 x 225 7 9/16 x 6 3/8 x 8 7/8
62 225 x 162 x 225 8 7/8 x 6 3/8 x 8 7/8
63 258 x 162 x 225 10 3/16 x 6 3/8 x 8 7/8
64 296 x 162 x 225 11 5/8 x 6 3/8 x 8 7/8
65 306 x 192 x 192 12 1/16 x 7 9/16 x 7 9/16
66 306 x 192 x 194 12 1/16 x 7 9/16 x 7 11/16
67R 231 x 175 x 176 9 1/8 x 6 7/8 x 6 15/16
70 208 x 179 x 186 8 3/16 x 7 1/16 x 7 5/16
71 208 x 179 x 216 8 3/16 x 7 1/16 x 8 1/2
72 230 x 179 x 210 9 1/16 x 7 1/16 x 8 1/4
73 230 x 179 x 216 9 1/16 x 7 1/16 x 8 1/2
74 260 x 184 x 222 10 1/4 x 7 1/4 x 8 3/4
75 230 x 179 x 186 9 1/16 x 7 1/16 x 7 5/16
76 334 x 179 x 216 13 1/8 x 7 1/16 x 8 1/2
77 306 x 184 x 222 12 1/16 x 7 1/4 x 8 3/4
 78 260 x 179 x 186 10 1/4 x 7 1/16 x 7 5/16 12V75Ah-ST (Car Starting Battery)
79 307 x 179 x 188 12 1/16 x 7 1/16 x 7 3/8
85 230 x 173 x 203 9 1/16 x 6 13/16 x 8
86 230 x 173 x 203 9 1/16 x 6 13/16 x 8
90 243 x 175 x 175 9 9/16 x 6 7/8 x 6 7/8
91 280 x 175 x 175 11 x 6 7/8 x 6 7/8
92 316 x 175 x 175 12 7/16 x 6 7/8 x 6 7/8
93 354 x 175 x 175 13 15/16 x 6 7/8 x6 7/8
94R 315 x 175 x 190 12 7/16 x 6 7/8 x 7 1/2
95R 394 x 175 x 190 15 9/16 x 6 7/8 x 7 1/2
96R 242 x 175 x 175 9 1/2 x 6 7/8 x 6 7/8
97R 252 x 175 x 190 9 15/16 x 6 7/8 x 7 1/2
98R 283 x 175 x 190 11 1/8 x 6 7/8 x 7 1/2
99 207 x 175 x 175 8 1/8 x 6 7/8 x 6 7/8
99R 210 x 175 x 175 8 1/4 x 6 7/8 x 6 7/8
100 260 x 179 x 188 10 1/4 x 7 1/16 x 7 3/8
101 260 x 179 x 170 10 1/4 x 7 1/16 x 6 11/16
121R 208 x 177 x 215 8 1/4 x 7 x 8 1/2
124 265 x 175 x 214 10 7/16 x 6 7/8 x 8 7/16
124R 262 x 177 x 218 10 3/8 x 7 x 8 5/8
151R 188 x 125 x 225 7 7/16 x 4 15/16 x 8 7/8
Passenger Car and Light Commercial 6V Batteries (3 Cells)
1 232 x 181 x 238 9 1/8 x 7 1/8 x 9 3/8
2 264 x 181 x 238 10 3/8 x 7 1/8 x 9 3/8
2E 492 x 105 x 232 19 3/8 x 4 1/8 x 9 1/8
2N 254 x 141 x 227 10 x 5 9/16 x 8 15/16
17HF 187 x 175 x 229 7 3/8 x 6 7/8 x 9
19L 216 x 178 x 191 8 1/2 x 7 x 7 1/2
Heavy Duty Commercial and Special Tractor 12V Batteries (6 Cells)
3EE 491 x 111 x 225 19 5/16 x 4 3/8 x 8 7/8
3ET 491 x 111 x 249 19 5/16 x 4 3/8 x 9 13/16
4D 527 x 222 x 250 20 3/4 x 8 3/4 x 9 7/8
4DLT 508 x 208 x 202 20 x 8 3/16 x 7 15/16
6D 527 x 254 x 260 20 3/4 x 10 x 10 1/4
8D 527 x 283 x 250 20 3/4 x 11 1/8 x 9 7/8 12V300Ah
24V150Ah
24V210Ah
48V60Ah
48V100Ah
12T 179 x 177 x 202 7 1/16 x 6 15/16 x 7 15/16
28 261 x 173 x 240 10 1/4 x 6 13/16 x 9 7/16
29H 334 x 171 x 232 13 1/8 x 6 3/4 x 9 1/8
30H 343 x 173 x 235 13 1/2 x 6 13/16 x 9 1/4
31 330 x 173 x 240 13 x 6 13/16 x 9 7/16 12V100Ah
12V120Ah
12V150Ah
24V60Ah
Heavy Duty Commercial and Special Tractor 6V Batteries (3 Cells)
3 298 x 181 x 238 11 3/4 x 7 1/8 x 9 3/8
3EH 491 x 111 x 249 19 5/16 x 4 3/8 x 9 13/16
4 334 x 181 x 238 13 1/8 x 7 1/8 x 9 3/8
4EH 491 x 127 x 249 19 5/16 x 5 x 9 13/16
5D 349 x 181 x 238 13 3/4 x 7 1/8 x 9 3/8
7D 413 x 181 x 238 16 1/4 x 7 1/8 x 9 3/8
Electric Vehicle 6V Batteries (3 Cells)
GC2 264 x 183 x 277 10 3/8 x 7 3/16 x 10 7/8
GC2H 264 x 183 x 295 10 3/8 x 7 3/16 x 11 5/8
Electric Vehicle 8V Batteries (4 Cells)
GC8 264 x 183 x 277 10 3/8 x 7 3/16 x 10 7/8
GC8H 264 x 183 x 295 10 3/8 x 7 3/16 x 11 5/8
Electric Vehicle 12V Batteries (6 Cells)
Group GC12 Batteries 327 x 183 x 277 12 7/8 x 7 3/16 x 10 7/8
Commercial/Marine 8V Batteries (4 Cells)
981 527 x 191 x 273 20 3/4 x 7 1/2 x 10 3/4
982 546 x 191 x 267 21 1/2 x 7 1/2 x 10 1/2
983 622 x 191 x 267 24 1/2 x 7 1/2 x 10 1/2
984 699 x 191 x 267 27 1/2 x 7 1/2 x 10 1/2
985 683 x 216 x 273 26 7/8 x 8 1/2 x 11 3/4
General Purpose 12V Batteries (6 Cells)
Group U1 Batteries 197 x 132 x 186 7 3/4 x 5 3/16 x 7 5/16
Group U1R Batteries 197 x 132 x 186 7 3/4 x 5 3/16 x 7 5/16
U2 160 x 132 x 181 6 5/16 x 5 3/16 x 7 1/8
Ordnance 12V Batteries (6 Cells)
2H 260 x 135 x 227 10 1/4 x 5 5/16 x 8 15/16
6T 286 x 267 x 230 11 1/4 x 10 1/2 x 9 1/16
Ordnance 24V Batteries (12 Cells)
4H 273 x 262 x 229 10 3/4 x 10 5/16 x 9
Floor Scrubber 6V Commercial Batteries (3 Cells)
901 298 x 181 x 302 11 3/4 x 7 1/8 x 11 7/8
902 302 x 181 x 371 12 x 7 1/8 x 14 5/8
903 302 x 181 x 432 12 x 7 1/8 x 17
Floor Scrubber 12V Commercial Batteries (6 Cells)
920 356 x 171 x 311 14 x 6 3/4 x 12 1/2
921 397 x 181 x 378 15 3/4 x 7 1/8 x 14 7/8

Data excerpted from the BCI Battery Replacement Data Book.

Note 1: The maximum height mentioned includes the terminal posts. Width and length measurements typically account for the widest point, encompassing protruding flanges, except for hold-down flanges at the battery’s bottom. For comprehensive details, refer to the diagrams available in the BCI Battery Replacement Data Book.

Note 2: Contact Redway for custom order details.

BCI Battery Groups, DIN, and EN Codes Cross Reference Chart

BCI Battery Groups, DIN, and EN Codes Cross Reference Chart compares battery standards globally. BCI codes are used in North America, while DIN and EN codes are common in Europe. This chart aids in finding equivalent batteries across standards, ensuring compatibility for international applications.

The following cross-reference chart lists the most popular BCI battery groups and their DIN and EN equivalent codes:

Maximum BCI Battery Dimensions
(L x W x H, inch/mm)
BCI Group Maximum DIN/EN Battery Dimensions
(L x W x H mm)
DIN Codes EN Codes
10 15/16 x 6 7/8 x 6 7/8
277 x 175 x 175
40R 278 x 175 x 175 T6, LB3 66LB
11 3/16 x 6 7/8 x 6 7/8
293 x 175 x 175
41 293 x 175 x 175 T65 54LB
9 5/16 x 6 13/16 x 6 13/16
237 x 173 x 173
42 242 x 175 x 175 T5, LB2 45LB
9 7/16 x 6 7/8 x 7 1/2
242 x 175 x 190
47 242 x 175 x 190 H5, L2 55L2
11 x 6 7/8 x 7 1/2
278 x 175 x 190
48 278 x 175 x 190 H6, L3 66L3
13 15/16 x 6 7/8 x 7 1/2
354 x 175 x 190
49 354 x 175 x 190 H8, L5 88L5
9 11/16 x 6 7/8 x 6 7/8
246 x 175 x 175
90 242 x 175 x 175 T5, LB2 45LB
11 x 6 7/8 x 6 7/8
280 x 175 x 175
91 278 x 175 x 175 T6, LB3 66LB
12 1/2 x 6 7/8 x 6 7/8
317 x 175 x 175
92 315 x 175 x 175 T7, LB4 77LB
15 x 6 7/8 x 6 7/8
354 x 175 x 175
93 354 x 175 x 175 T8, LB5 88LB
12 7/16 x 6 7/8 x 7 1/2
315 x 175 x 190
94R 315 x 175 x 190 H7, L4 77L4
15 9/16 x 6 7/8 x 7 1/2
394 x 175 x 190
95R 394 x 175 x 190 H9, L6
9 15/16 x 6 7/8 x 7 1/2
252 x 175 x 190
97R 252 x 175 x 190 H5, L2 55L2
11 1/8 x 6 7/8 x 7 1/2
283 x 175 x 190
98R 283 x 175 x 190 H6, L3 66L3
8 1/8 x 6 7/8 x 6 7/8
207 x 175 x 175
99 207 x 175 x 175 T4, LB1 36LB
8 1/4 x 6 7/8 x 6 7/8
210 x 175 x 175
99R 210 x 175 x 175 T4, LB1 36LB
175 x 175 x 190 H3, L0 32L0
297 x 175 x 190 H4, L1 45L1

Comparison of Small 12V Deep Cycle General-Purpose Batteries

Comparison of Small 12V Deep Cycle General-Purpose Batteries assesses options for capacity, lifespan, and versatility. Commonly used in marine, RV, and off-grid systems, these batteries vary in amp-hour rating, cycle life, and maintenance needs. Consider these factors when selecting the ideal battery for specific applications

Small 12V deep cycle/general purpose batteries are mostly Sealed Lead-Acid (SLA) or Lithium Iron Phosphate (LiFePO4) batteries, typically used in UPS devices, alarms, toys, wheelchairs, and similar.

Most popular models are batteries with smaller capacities, usually up to 30-35Ah, where standard Group U1 and U1R batteries kick in.

If you are looking for even larger deep cycle/general purpose batteries, consider one of the larger battery groups, like groups 24, 27, 31, etc.

The following comparison chart lists some of the most popular small 12V general-purpose batteries with their dimensions and terminals.

Nominal Capacity Dimensions inches
(L x W x H)
Dimensions mm
(L x W x H)
Terminals
12V 2.9Ah 3.11 x 2.20 x 3.90 inches 79 x 56 x 99 mm F1 (T1)
12V 3.5Ah 5.28 x 2.64 x 2.38 inches 134 x 67 x 61 mm F1 (T1)
12V 4Ah 3.54 x 2.76 x 3.98 inches 90 x 70 x 101 mm F1 (T1)
12V 5Ah 3.54 x 2.76 x 3.98 inches 90 x 70 x 101 mm F1 (T1)
12V 7Ah 5.94 x 2.56 x 3.7 inches 151 x 65 x 94 mm F1 (mostly)
12V 9Ah 5.94 x 2.56 x 3.7 inches 151 x 65 x 94 mm F2 (mostly)
12V 10Ah 5.94 x 2.56 x 4.37 inches 151 x 65 x 111 mm F2 (T2) (mostly)
12V 12Ah 5.94 x 3.86 x 3.98 inches 151 x 98 x 101 mm F2 (mostly)
12V 15Ah 5.94 x 3.86 x 3.98 inches 151 x 98 x 101 mm F2
12V 18Ah, 19Ah, 20Ah+ 7.15 x 3.03 x 6.59 inches 181 x 77 x 167 mm T3 (NB), M5, M6
12V 26Ah 6.89 x 6.54 x 4.94 inches 175 x 166 x 126 mm NB
12V 30Ah 6.50 x 4.90 x 6.90 inches 165 x 125 x 175 mm T3 (NB)
12V 35Ah 7.68 x 5.12 x 6.46 inches 195 x 130 x 164 mm T6 (NB)
12V 35Ah (U1, U1R) 7.75 x 5.18 x 7.31 inches 197 x 132 x 186 mm NB
12V 55Ah 9.04 x 5.45 x 8.15 inches 230 x 139 x 207 mm T6 (NB)
12V 80Ah 10.16 x 6.65 x 8.20 inches 258 x 169 x 208 mm T6 (NB)

What happens if I use the wrong group size battery?

Using the wrong group size battery can cause fitment issues, electrical problems, performance issues, and safety hazards. Improper fitment may damage the battery or the vehicle. Incorrect specifications can lead to undercharging/overcharging, damaging components, and difficulty starting the vehicle. Consult manuals or mechanics to ensure proper selection and avoid these issues.

Using the wrong group size battery for your vehicle can lead to various issues:

  1. Fitment Problems: Batteries come in different sizes and shapes. Using a battery with the wrong group size may not fit properly in your vehicle’s battery compartment. This can lead to physical damage to the battery, the vehicle, or both.
  2. Electrical Compatibility: Batteries are designed to provide a specific voltage and capacity suitable for the vehicle’s electrical system. Using a battery with the wrong specifications can lead to electrical problems such as undercharging or overcharging, which may damage sensitive electronic components like the alternator or the vehicle’s computer systems.
  3. Performance Issues: A battery with the wrong group size may not provide enough cranking power (CCA – Cold Cranking Amps) or reserve capacity to start the engine reliably or power auxiliary systems. This can result in difficulty starting the vehicle, especially in cold weather, or frequent battery failures.
  4. Safety Concerns: In extreme cases, using an improperly sized battery can pose safety hazards such as leaking electrolyte, overheating, or even explosion due to excessive charging or discharging.

To avoid these issues, always consult your vehicle’s owner’s manual or seek advice from a professional mechanic to ensure you select the correct group size battery for your vehicle.

How to Choose the Right Battery Group Size

Choosing the right battery group size is crucial for optimal car performance and longevity. Using an incorrect size can result in poor connections, reduced power, and starting difficulties, especially in cold weather. It may also harm the charging system, leading to early failure. Ensure compatibility with your car’s power needs for reliability and cost savings.

  1. Impact of Wrong Size: Using an incorrect battery group size results in poor connections, reduced power, and difficulties starting, especially in cold weather. It can lead to vibrations that harm other car parts.
  2. Charging System Effects: Mismatched sizes affect the charging system, potentially causing early failure of both the battery and alternator, impacting their ability to charge properly.
  3. System Compatibility: Each car model has specific power needs. Selecting the right group size ensures compatibility, optimizing performance, and preventing potential damage to your car’s electrical system.

Investing time in research or seeking expert advice to choose the right battery group size pays off in reliability and cost savings for your vehicle.

Different Car Battery Types and Corresponding Group Sizes

Different car battery types include lead-acid, AGM, and lithium-ion, tailored for various vehicles. Common group sizes like 24, 27, 34, 35, 48, 49, 65, and 78 suit passenger vehicles, while larger ones like 8D are for bigger vehicles. Choose based on your vehicle’s needs for optimal performance and longevity, referring to manufacturer recommendations or a Battery Group Size Chart Guide.

  1. Lead-Acid Batteries: Budget-friendly and reliable, available in various group sizes like Group 24 or Group 31, tailored to fit your car’s dimensions and power needs.
  2. AGM Batteries: These batteries use a soaked mat instead of liquid electrolyte, offering top-notch performance and durability, making them ideal for vehicles with high electrical demands.
  3. Specialized Batteries like Lithium-Ion: Hybrid or electric cars might require lithium-ion batteries with higher energy density and longer lifespans, despite being pricier.

Ensure your battery matches your vehicle’s needs by referring to the manufacturer’s recommendations or using a Battery Group Size Chart Guide. Selecting the right group size guarantees peak battery performance and prevents potential damage to your car’s electrical system. Understanding the different types of car batteries and their corresponding group sizes is essential for long-term savings and maintaining smooth vehicle operation.

How to Determine Car Battery Group Size

To determine your car’s battery group size, consult the owner’s manual or inspect the existing battery for alphanumeric codes like 24F or H6. Seek assistance from a mechanic or auto parts store if needed. Choosing the correct size is crucial for optimal vehicle performance and prevents damage to the charging system.

How to Determine Car Battery Group Size, BCI Battery Group Size Chart (Group 24, 27, 31, etc)

  1. Check the Owner’s Manual: Consult your car’s manual, as it often specifies the recommended battery group size for your make and model.
  2. Inspect the Existing Battery: Examine your current battery for a label or stamp with alphanumeric codes like 24F or H6 – these indicate the specific group size.
  3. Seek Professional Help: When in doubt, consult a mechanic or visit an auto parts store for assistance. They have tools and expertise to identify the right battery group size for your vehicle.

Choosing the correct battery group size is crucial to prevent electrical issues and potential damage to your car’s charging system. Ensure accuracy for optimal vehicle performance and the longevity of your car’s electrical components.

What are the most popular battery group sizes?

Popular battery group sizes for vehicles include Group 24 for compact cars, Group 35 for compact cars and light trucks, and Group 48 (H6) for full-size sedans, SUVs, and trucks. Other common sizes are Group 49 (H8) for SUVs, Group 51R for compact cars and hybrids, Group 65 for trucks, SUVs, and performance cars, and Group 78 (H7) for SUVs and trucks. Consult your vehicle’s manual or a professional for the appropriate size.

Group 24: Typically used in smaller vehicles such as compact cars and some mid-size sedans.

Group 35: Commonly found in compact cars, small to mid-size sedans, and some light trucks.

Group 48 (H6): Used in larger vehicles such as full-size sedans, SUVs, and trucks.

Group 49 (H8): Often used in larger vehicles with higher electrical demands, such as SUVs, trucks, and luxury cars.

Group 51R: Commonly used in smaller vehicles with limited space for the battery, such as compact cars and some hybrids.

Group 65: Found in larger vehicles with higher electrical demands, such as trucks, SUVs, and performance cars.

Group 78 (H7): Used in larger vehicles, including some SUVs, trucks, and full-size sedans.

These are just a few examples, and there are many other group sizes available to accommodate the diverse range of vehicles on the market. It’s essential to consult your vehicle’s owner’s manual or consult with a professional to determine the appropriate battery group size for your specific vehicle.

How to Maintain Car Battery

Maintain your car battery with these tips: Inspect for corrosion and loose connections, clean terminals with a baking soda-water mix, minimize electrical accessory use when the engine is off, drive regularly, protect from extreme temperatures, test the charging system periodically, and learn jump-starting. Ensure longevity by caring for components like belts for overall vehicle health.

BCI Battery Group Size Chart (Group 24, 27, 31, How to Maintain Car Battery

  1. Regular Inspections: Check for corrosion, loose connections, and leaks regularly. Clean terminals to maintain a solid connection.
  2. Keep it Clean: Clean the battery with a baking soda-water mix to gently remove buildup on terminals, promoting optimal performance.
  3. Mind Electrical Use: Minimize the use of electrical accessories when the engine is off to avoid draining the battery.
  4. Drive Regularly: Drive the car at least once a week for a reasonable distance to prevent decreased battery life and keep it charged.
  5. Temperature Protection: Extreme temperatures impact battery performance. Park in shaded areas during summer and use insulation blankets in winter.
  6. Charging System Check: Test the car’s charging system occasionally to catch issues early and prevent battery-related problems.
  7. Learn Jump-Starting: Understand how to safely jump-start a dead battery; it’s a valuable skill for emergencies.
Group Size LxWxH (inches) LxWxH (mm)
Group 24 Batteries 10.25 x 6.8125 x 8.875 260 x 173 x 225
Group 27 Batteries 12.0625 x 6.8125 x 8.875 306 x 173 x 225
Group 31 Batteries 13 x 6.8125 x 9.4375 330 x 173 x 240
Group 34 Batteries 10.25 x 6.8125 x 7.875 260 x 173 x 200
Group 35 Batteries 9.0625 x 6.875 x 8.875 230 x 175 x 225
Group 51 and 51R Batteries 9.374 x 5.0625 x 8.8125 238 x 129 x 223
Group 65 Batteries 12.0625 x 7.5 x 7.5625 306 x 190 x 192
Group 78 Batteries 10.25 x 7.0625 x 7.3125 260 x 179 x 186

Maintaining your car’s battery goes beyond fluid checks; caring for components like belts contributes to overall vehicle health and longevity.

Conclusion

Selecting the right battery group size is crucial for optimal car performance. The battery group size chart provides vital details on dimensions and specifications. Choosing the wrong size may lead to fitment issues and electrical system damage. Different cars require different sizes, so consult the manual or current battery markings for accuracy. Regular maintenance, including terminal and cable checks, ensures longevity.

FAQs

What is the difference between Group 27 and Group 31?
Group 27 and Group 31 batteries differ primarily in size and capacity. Group 31 batteries are larger and typically have higher capacity ratings compared to Group 27 batteries. Group 31 batteries are commonly used in larger vehicles like trucks and buses, whereas Group 27 batteries are often found in mid-size vehicles such as SUVs and some boats.

How many CCA is a Group 27 battery?
The Cold Cranking Amps (CCA) rating of a Group 27 battery can vary depending on the specific brand and model. However, Group 27 batteries typically have CCA ratings ranging from around 600 to 1000 amps.

Is a Group 31 battery better than a Group 24?
Group 31 batteries are generally larger and have higher capacity and CCA ratings compared to Group 24 batteries. Therefore, in terms of performance and power output, a Group 31 battery may be considered better suited for heavy-duty applications or larger vehicles than a Group 24 battery.

What is the difference? Group 24 VS  Group 27 battery
The main difference between Group 24 and Group 27 batteries is their physical size and capacity. Group 27 batteries are typically larger and have higher capacity ratings compared to Group 24 batteries. As a result, Group 27 batteries may provide more power and longer life than Group 24 batteries, but they may also be more expensive and require additional space for installation. Click to know more.

Can I replace a Group 24 battery with a Group 27 battery?
In many cases, it is possible to replace a Group 24 battery with a Group 27 battery if there is enough space in the vehicle’s battery compartment to accommodate the larger size of the Group 27 battery. However, it’s essential to ensure that the electrical specifications, such as voltage and CCA rating, are compatible with the vehicle’s requirements. Click to know more.

What does 51R mean on a battery?
The “51R” designation on a battery refers to its group size according to the Battery Council International (BCI) standard. Group 51R batteries are typically smaller and have specific dimensions and terminal configurations suitable for vehicles with limited space for the battery, such as compact cars and some hybrids.

What is the difference between Group 35 and 51R?
Group 35 and 51R batteries differ primarily in size and capacity. Group 35 batteries are larger and typically have higher capacity and CCA ratings compared to Group 51R batteries. Therefore, Group 35 batteries are often used in larger vehicles with higher electrical demands, while Group 51R batteries are more suitable for compact cars and vehicles with limited space for the battery.

BCI Battery Group Size Chart (Group 24, 27, 31, Group 35 vs 51R

What are the dimensions, features, and recommendations for Group 47 (H5, L2, 55L2) batteries?
Group 47 (H5, L2, 55L2) batteries are classified as medium-sized batteries commonly utilized in automotive and light industrial settings. These batteries serve multiple purposes, including starting mid-range diesel and gas engines and providing power to various electric and electronic devices when the engine is not running. Typically, Group 47 batteries are spill-proof and maintenance-free, with many models available on the market adhering to these standards. It is recommended to select a BCI Group 47 battery that is designed with AGM (Absorbent Glass Mat) technology for improved performance and longevity.

What are the dimensions, features, and recommendations for Group 34 batteries?
Group 34 batteries are known for their medium-large size and considerable power output. These batteries typically have a 20-hour capacity falling within the 50-75 Ah range, providing a cold cranking amps (CCA) rating between 750-900. They also boast a reserve capacity of 100-145 minutes. The weight of Group 34 batteries varies depending on factors such as the chemistry, battery type, and internal construction, typically ranging from 37 to 51 pounds (16.8 – 23.1 kg).

When it comes to applications, BCI Group 34 batteries find common use in a variety of fields including automotive, marine, industrial, and off-the-grid settings. They are available in different types such as starting, dual-purpose, and deep cycle batteries, each offering distinct benefits. These batteries are especially valued for their good starting and cranking characteristics, a high number of charging and discharging cycles, and impressive deep cycle recovery abilities.

For optimal performance and longevity, it is recommended to choose a Group 34 battery that aligns with the specific demands of the intended application. Additionally, regular maintenance and adherence to manufacturer guidelines for charging and discharging practices can further enhance the lifespan and efficiency of these batteries.

What are the dimensions, features, and recommendations for Group 48 (H6, L3, 66L3) batteries?
Group 48 (H6, L3, 66L3) batteries, also known as BCI Group 48 batteries, are versatile mid-range power sources widely utilized in automotive, marine, and light industrial applications. These batteries serve as reliable starting or dual-purpose energy providers and are commonly employed to operate various electric and electronic devices when the primary engine is switched off or when electricity is unavailable.

Specially designed for durability and efficiency, most Group 48 batteries are crafted as maintenance-free, spill-proof AGM (Absorbent Glass Mat) batteries. Their advanced construction provides enhanced resistance to vibrations and mechanical shocks, surpassing the durability of traditional wet/flooded lead-acid batteries.

For those seeking a dependable power solution with robust performance capabilities, a Group 48 battery is a recommended choice due to its versatility, reliability, and cutting-edge design features. Ensuring peace of mind and optimal power supply, these batteries offer a reliable solution for a wide range of applications in various industries and settings.

What are the dimensions, features, and equivalents for Group 41 (T65, 54LB) batteries?
Group 41 (T65, 54LB) batteries are a specific type of automotive starting, lighting, and ignition (SLI) battery. These batteries are engineered with dimensions that correspond to the Group 41 standard, ensuring they fit properly in compatible vehicles. The features of Group 41 batteries include a capability to deliver a high starting current, enabling efficient engine cranking and quick recharging.

BCI Battery Group Size Chart (Group 24, 27, 31, group 41 size dimensions and CCA

Moreover, Group 41 batteries find application in various settings beyond automotive use. They are commonly employed in light industrial and marine environments where batteries with 600-650 Cold Cranking Amps (CCA) are essential. This versatility makes Group 41 batteries a popular choice across different industries.

What are the dimensions, features, and recommendations for Group 31 batteries?

Group 31 batteries are known for their large size and high power capacity. They typically have a 20-hour capacity within the range of 75 to 125 Ampere-hours (Ah) and offer a cold cranking amps (CCA) rating between 750 and 1250. Additionally, these batteries provide a reserve capacity (RC) of 150 to 250 minutes. The physical dimensions of Group 31 batteries are approximately 13 x 6 13/16 x 9 7/16 inches (or around 330 x 173 x 240 mm).

These batteries are commonly utilized in marine, automotive, off-the-grid, and various other applications due to their versatility and performance. However, specific features of Group 31 batteries can vary based on factors such as the design, intended use, and chemistry of the battery. It is essential to consider these factors and the individual requirements of your application when choosing a Group 31 battery.

Considering their popularity and widespread use in different industries, Group 31 batteries are recommended for those seeking a reliable power source with substantial capacity and performance. Whether you need a dependable battery for marine operations, automotive vehicles, or off-grid power systems, Group 31 batteries have proven to be a popular and effective choice.

What are the dimensions, features, and recommendations for Group 65 batteries?

Group 65 batteries, commonly utilized in automotive, marine, and industrial applications, are mid-sized batteries that offer versatility as they are designed as dual-purpose AGM batteries. These batteries are capable of functioning both as starting and deep cycle batteries, owing to the advancements in AGM SLA battery technology.

Group 65 batteries typically come with a 70-75 Ah 20h capacity, offering 130-150 minutes of Reserve Capacity (RC), and provide 750-950 Cold Cranking Amps (CCA). Some models even boast MCA (Marine Cranking Amps) values of nearly 1100 Amps. In terms of weight, these batteries usually range from 45 to 55 pounds (20 – 25 kg).

It is important to note that these figures may vary slightly depending on the specific manufacturer and model. Therefore, it is recommended to refer to the latest information provided by the manufacturer for the most accurate details.

What are the dimensions, features, and recommendations for Group 94R (H7, L4, 77L4) batteries?

Group 94R batteries, also known as H7, L4, and 77L4 batteries, are commonly used in passenger vehicles, SUVs, luxury cars, and light commercial vehicles. These batteries are specifically designed for vehicles produced by well-known brands such as BMW, Mercedes, Audi, Volkswagen, and others. Group 94R batteries are characterized by their maintenance-free design, robust starting current even in cold temperatures, rapid charging capability, ability to power various onboard electronics, and durability under automatic start-stop conditions.

BCI Battery Group Size Chart (Group 24, 27, 31, group 94R size dimensions and CCA

The recommended features of Group 94R batteries include their strong starting power, compatibility with a wide range of vehicles, maintenance-free operation, ability to withstand cold temperatures, quick charging capability, and reliable performance under automatic start-stop systems. These batteries are suitable for use in vehicles from leading automotive manufacturers and are ideal for applications where a dependable power source is required. Additionally, Group 94R batteries are designed to ensure longevity and optimal performance in various operating conditions.

It is important to note that the dimensions of Group 94R batteries, including H7, L4, and 77L4 types, may vary slightly depending on the manufacturer. For specific sizing requirements, it is recommended to refer to the battery specifications provided by the manufacturer or consult with a professional technician to ensure proper fitment and compatibility with your vehicle.

What are the dimensions, features, and recommendations for Group 78 batteries?

Group 78 batteries, part of the BCI classification, are popularly utilized in a variety of vehicles including cars, light trucks, boats, and light industrial machinery. They are designed to serve as both starting batteries and general-purpose batteries in these applications. These batteries are specifically well-suited for “Stop-and-Go” automotive use, where they are required to consistently deliver high currents and quickly recharge, necessitating a strong and durable design for reliable performance. For the latest information about Group 78 batteries, consult the most recent updates available as of October 27, 2023.

What are the dimensions, features, and recommendations for Group 27 batteries?

Group 27 batteries are robust and large battery options known for their high power output and capacity. These batteries typically offer a 20-hour capacity within the 66-110 Ah range and provide a cold cranking amps (CCA) rating ranging from 600 to 1000. Additionally, they offer a reserve capacity (RC) of 140-220 minutes. The weight of Group 27 batteries can vary depending on their internal construction, typically falling between 54 and 70 pounds (24.5 – 32 kg).

When considering Group 27 batteries, it is important to note that their physical dimensions can vary based on the specific battery group. The available variants are Group 27, Group 27F, and Group 27H, which share similarities but may have slightly different dimensions. Despite the variations, these batteries are often commonly labeled as Group 27 Batteries.

For those seeking a reliable battery with ample power and capacity, Group 27 batteries are a suitable choice. It is recommended to check the specific dimensions of the battery group required for your vehicle to ensure a proper fit and optimal performance. Additionally, considering the weight and power output of Group 27 batteries is essential when selecting the appropriate option for your individual needs.

How do battery terminal adapters like “F1 to F2” and “F2 to F1” play a role in battery compatibility and flexibility?

Battery terminal adapters such as “F1 to F2” and “F2 to F1” play a crucial role in enhancing battery compatibility and flexibility. They enable the connection of batteries with different terminal sizes and configurations, allowing for a wider range of batteries to be used with various devices or equipment. By providing a way to adapt between different terminal types, these adapters ensure that users can easily interchange batteries without being limited by terminal variations. This flexibility not only simplifies battery replacement and installation processes but also eliminates the need to search for specific battery sizes with matching terminals. Ultimately, battery terminal adapters contribute to the efficiency and convenience of using batteries across different devices and applications.

What are the nominal capacities and dimensions of various small 12V general-purpose batteries listed in the comparison chart?

The comparison chart provides detailed information on the nominal capacities and dimensions of various small 12V general-purpose batteries. These batteries range from 2.9Ah to 80Ah in nominal capacity. The dimensions are listed in both inches and millimeters, including the length, width, and height of each battery model. The terminals for each battery are also specified, such as F1, F2, T2, T3, and NB. Some batteries have mostly one type of terminal, while others may have a mix. The smallest battery listed is 3.11 x 2.20 x 3.90 inches (79 x 56 x 99 mm) with a nominal capacity of 2.9Ah, while the largest one measures 10.16 x 6.65 x 8.20 inches (258 x 169 x 208 mm) with a nominal capacity of 80Ah. These variations in capacity and dimensions allow users to select the battery that best suits their specific needs and applications.

What are the popular models of small 12V general-purpose batteries and their dimensions and terminals?

Popular models of small 12V general-purpose batteries include Sealed Lead-Acid (SLA) and Lithium Iron Phosphate (LiFePO4) batteries. These batteries are commonly utilized in applications such as UPS devices, alarms, toys, wheelchairs, and other similar devices. The most in-demand models are those with smaller capacities, typically ranging up to 30-35Ah. Usually, Group U1 and U1R batteries are the standard choices for these applications. Providing a detailed comparison chart showcasing the popular small 12V general-purpose batteries, including their dimensions and terminal specifications, can help consumers make informed decisions regarding the selection of the appropriate battery for their specific needs.

BCI Battery Group Size Chart (Group 24, 27, 31, 12v30Ah 12v35ah 12v33ah lifepo4 lfp battery

What are small 12V deep cycle/general purpose batteries typically used for?

Small 12V deep cycle/general purpose batteries, such as Sealed Lead-Acid (SLA) or Lithium Iron Phosphate (LiFePO4) batteries, are commonly utilized in various devices. These batteries find frequent use in applications such as uninterruptible power supply (UPS) devices, alarm systems, toys, wheelchairs, and similar equipment requiring reliable and consistent power sources.

What are some important details to consider when replacing a battery, such as orientation of terminals, terminal types, base hold-down type, and lifting edge?

When replacing a battery, it is crucial to consider several important details to ensure a successful replacement process. Some of the key factors to keep in mind include the orientation of the terminals, the types of terminals used, the base hold-down type, the lifting edge, and other minor yet significant details. It is essential to check not only the dimensions of the new battery but also verify the orientation of the terminals, the specific terminal types, the system used to hold down the battery securely in place, and any lifting edges that may be present. Paying attention to these details will help prevent issues and ensure that the replacement battery is installed correctly and functions properly.

What are the common uses and features of BCI Group GC8, GC8H, GC2, GC2H, and GC12 batteries?

BCI Group GC8 and GC8H batteries are heavy-duty deep cycle batteries that are commonly utilized in a variety of applications, such as golf carts, marine use, off-the-grid settings, and for powering medical and security systems. These batteries are designed to provide long-lasting and reliable energy sources for demanding environments. Similarly, BCI Group GC2 and GC2H batteries are known for their heavy-duty deep cycle properties and are frequently employed in golf carts, automotive settings, marine applications, off-the-grid scenarios, and for powering medical and security systems. On the other hand, BCI Group GC12 batteries are designed as deep cycle, heavy-duty batteries that are ideal for automotive, off-the-grid, and light industrial applications where durable energy sources are necessary. These batteries are built to be strong and reliable, offering a dependable power supply in various demanding situations.

What are the dimensions, features, and recommendations for Groups 51 and 51R batteries?

Groups 51 and 51R batteries serve as popular automotive starting and dual-purpose batteries that are often utilized as general-purpose or auxiliary power sources across various applications. While these batteries have defined sizes, there can be slight variations depending on manufacturer specifications. Some manufacturers may adjust the size of the batteries for specific applications, making them slightly smaller for easier fitting or larger for enhanced performance. Thus, it is advisable to verify the actual dimensions of the battery and your battery compartment before making a purchase.

How are BCI Group 49 (H8, L5, 88L5) batteries commonly used and what are some important differences to be aware of?
BCI Group 49, Group H8, Group L5, and Group 88L5 batteries are widely used in cars and trucks for different purposes. These batteries are not only utilized for starting the vehicle but are also commonly used as dual-purpose batteries. They are capable of powering various electrical loads even when the main engine is not running. Some typical applications include operating winches, pumps, multimedia devices, and other accessories.

While these batteries are generally considered interchangeable, there are some key differences that buyers should be aware of before making a purchase. Understanding these differences can help consumers make informed decisions based on their specific needs and requirements, ensuring that they get the most suitable battery for their vehicle.

What are the alternatives and recommendations for Group 58 and 58R batteries?
Group 58 and 58R batteries serve as mid-size cranking batteries suitable for various automotive applications, including passenger cars, sedans, SUVs, and boats. They are designed to provide reliable Starting, Lighting, and Ignition (SLI) functionality. While both Group 58 and Group 58R batteries share the same physical dimensions, they differ in terms of their battery terminal orientations. It is worth noting that certain brands offer internally different versions of both battery groups, with Group 58R batteries often boasting superior discharge characteristics compared to Group 58 batteries.

When considering alternatives and recommendations for Group 58 and 58R batteries, it is essential to take into account the specific requirements of the vehicle or marine application. Opting for a Group 58 battery may suffice for standard SLI functions in many vehicles, providing a cost-effective solution for those on a budget. However, if enhanced discharge performance is desired, selecting a Group 58R battery could be more advantageous, particularly for applications where a consistent power supply is crucial.

It is advisable to consult with automotive experts or refer to the vehicle’s manual to determine the most suitable battery option for your specific needs. Regular maintenance and proper charging practices are essential for prolonging the lifespan and maximizing the performance of Group 58 and 58R batteries. Consider factors such as cold-cranking amps, reserve capacity, and overall quality when making a decision between these two battery groups.

What are the common applications of BCI Group 35 batteries and what types of batteries are popular in this group?
BCI Group 35 batteries find widespread use in various applications such as automotive vehicles like cars, trucks, and RVs, often serving as starting or dual-purpose batteries. Beyond automotive applications, these batteries are also utilized in different settings like providing power backup for UPS systems, wheelchairs, security systems, medical equipment, and off-grid power solutions. The popular types of batteries within BCI Group 35 include Absorbent Glass Mat (AGM) Sealed Lead Acid (SLA) batteries, known for their efficiency and maintenance-free operation. Additionally, lithium iron phosphate (LiFePO4) batteries are gaining traction in the market, particularly for dual-purpose applications due to their advanced features and longevity.

What is the complete guide for Group 95R (H9/L6) batteries?
The complete guide for Group 95R (H9/L6) batteries covers their widespread popularity as automotive batteries, specifically in vehicles like SUVs, sedans, and pickups. These batteries are known for their size, capacity, and ability to start large internal combustion engines. In addition to being commonly used in automotive applications, Group 95R (H9/L6) batteries also find utility in light industrial starting and dual-purpose roles, as well as serving as backup power sources in emergency, medical, and security systems. This comprehensive guide sheds light on the various applications and advantages of Group 95R (H9/L6) batteries, offering valuable insights for consumers and industry professionals alike.

What are the dimensions, features, and recommendations for BCI Group 96R Batteries?
BCI Group 96R Batteries are primarily utilized as starting batteries in vehicles and other relevant applications, where there is a necessity for cost-effective and dependable starting batteries that can deliver 500-600 cold cranking amps (CCA). The majority of BCI Group 96R batteries available in the market are traditional wet/flooded lead-acid batteries, with limited options of AGM, Gel-Cell, or lithium batteries.

BCI Battery Group Size Chart (Group 24, 27, 31, group 96R size dimensions and CCA

For those instances where AGM, Gel-Cell, or lithium batteries are needed, it is recommended to seek out batteries from these categories that belong to similar BCI groups. When making a selection, it is important to consider factors such as battery size, capacity, terminal types, terminal orientation, and hold-down type/shape. This information is crucial for ensuring compatibility and optimal performance with the specific application requirements.

It is advisable to keep abreast of any updates or developments in battery technology or specifications to make an informed decision. As of the latest known update on October 12, 2023, the information provided can serve as a general guideline for understanding the dimensions, features, and recommendations associated with BCI Group 96R Batteries.

Can I Install a Battery of a Different Group Size, or Will It Harm My Car?

While it’s technically possible to change the battery tray and install a different-sized battery in your car, it’s not always advisable. If you opt for a battery of a different group size, your car may still function, provided the battery has sufficient cold-cranking amps and voltage to start and run the vehicle. However, installing a smaller battery can lead to issues with electronics functionality, and in some cases, the car may not start or run properly at all.

Conversely, using a larger-than-recommended battery can pose significant risks to your vehicle. The increased size can cause power surges and spikes that may damage electronics, such as the onboard computer, blow fuses, or even harm the alternator. For optimal safety and performance, it’s always recommended to stick with the recommended battery group size whenever possible.

Can I Install a Battery of a Different Group Size, or Will It Harm My Car? BCI Battery Group Size Chart (Group 24, 27, 31

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