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What Is Battery 18-85-17-b, 36V 680Ah For Forklift?
The Battery 18-85-17-b is a 36V 680Ah deep-cycle battery designed for electric forklifts, offering extended runtime and high torque. Its model code (“18-85-17”) typically denotes dimensions (18″L x 8.5″W x 17″H), while “B” indicates terminal configuration. Built with durable lead-acid or lithium-ion cells, it supports 1,500+ cycles at 80% DoD. Charging requires a 36V charger (42–44V absorption voltage for lead-acid). Pro Tip: Avoid partial charging to prevent sulfation in lead-acid versions.
How to Determine the Year of Your Hyster Forklift by Serial Number
What does the model number 18-85-17-b signify?
The 18-85-17-b code defines physical specs: 18″ length × 8.5″ width × 17″ height, with “B” marking terminal type (e.g., SAE posts). These standardized dimensions ensure compatibility with forklift battery trays. Pro Tip: Always verify tray clearances—lithium upgrades may need spacers due to smaller sizes.
Beyond basic measurements, the “17” height accounts for electrolyte expansion in lead-acid models, while the “B” suffix often denotes top-mounted terminals for easy cable routing. For example, switching from an “A” (side-terminal) to “B” configuration simplifies maintenance but may require adjusting cable lengths. Why does this matter? Mismatched terminals can lead to poor connections, accelerating corrosion. Transitioning to lithium? Their compact design often allows retrofit kits but check tray locking mechanisms to prevent shifting during operation.
What applications use the 36V 680Ah forklift battery?
This 36V 680Ah battery powers Class I–III forklifts in warehouses, distribution centers, and cold storage. Its high Ah rating supports 8–10 hours of heavy lifting (e.g., 2,000–4,000 lb loads). Lithium variants excel in multi-shift operations due to rapid charging.
In practice, a 680Ah lead-acid battery delivers ~410Ah usable capacity (at 80% DoD), enough for a 5,000 lb forklift to run 6 hours. Lithium-ion versions, however, provide full 680Ah usability, doubling runtime. Ever seen a freezer warehouse? Lead-acid batteries lose 30–40% capacity at -20°C, but lithium models with built-in heaters maintain performance. Pro Tip: For cold environments, opt for lithium and keep charging stations heated to avoid voltage drops.
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How does the 36V 680Ah compare to other forklift batteries?
The 36V 680Ah balances power and runtime, outperforming 24V models in heavy loads but requiring larger compartments. Compared to 48V systems, it offers lower upfront cost but reduced energy efficiency.
| Parameter | 36V 680Ah (Lead-Acid) | 48V 600Ah (Lithium) |
|---|---|---|
| Runtime | 6–8 hours | 10–12 hours |
| Charge Time | 8–10 hours | 2–3 hours |
| Cycle Life | 1,500 | 3,000+ |
Lead-acid suits single-shift operations due to longer charging, while lithium-ion supports 24/7 use. But what if you need a cost-effective solution? Lead-acid’s lower initial price (≈$4,000 vs. $12,000 for lithium) makes it viable for smaller operations. However, factor in water refilling and equalization costs—lithium saves 30% in long-term TCO.
What maintenance extends the 36V 680Ah battery’s lifespan?
For lead-acid versions, monthly equalization charging and electrolyte checks are critical. Lithium models need firmware updates and ambient temperature control (15–30°C ideal).
In lead-acid systems, sulfation from partial discharges can permanently reduce capacity. A 3-stage charging routine (bulk, absorption, float) prevents this. Imagine a battery as a sponge: incomplete charging leaves “dry spots” that harden over time. For lithium, avoid storing at 100% SoC—keep it at 40–60% during long idle periods. Pro Tip: Use a battery monitoring system (BMS) to track cell balance; imbalances ≥50mV require professional reconditioning.
How to Choose and Maintain Doosan Forklift Batteries Effectively
How to safely charge a 36V 680Ah forklift battery?
Use only 36V-compatible chargers with temperature compensation. Lead-acid charges at 0.1C (68A max), while lithium tolerates 1C (680A fast charging).
| Charging Factor | Lead-Acid | Lithium |
|---|---|---|
| Voltage Range | 42–44V | 36–41V |
| Temperature Limits | 0–45°C | -20–60°C |
| Cycle Impact | 20% loss if overheated | 5% loss if overheated |
Ever seen a bulging battery? Overcharging lead-acid causes gas venting and plate corrosion. Lithium’s BMS prevents overvoltage but can’t fix poor ventilation. Pro Tip: Install infrared thermometers on charging cabinets—shut down if temps exceed 50°C.
Redway Battery Expert Insight
FAQs
No—voltage mismatch can damage motors and controllers. Stick to OEM-specified ratings unless retrofitting the entire powertrain.
How long does a 36V 680Ah battery last per charge?
6–10 hours depending on load weight and travel frequency. Lithium lasts 20–30% longer due to higher usable capacity.
Is watering necessary for lithium 36V batteries?
No—lithium-ion cells are sealed, eliminating maintenance like watering or equalization required for lead-acid.
