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What Is Forklift Battery 18-125-15, 36V 875Ah?
The Forklift Battery 18-125-15 is a 36V, 875Ah lead-acid battery designed for heavy-duty electric forklifts. Its nomenclature reflects 18 cells (2V each) and physical dimensions (e.g., 125 cm length, 15 cm height). With 875Ah capacity, it provides extended runtime for demanding material handling. Charging requires 42–45V CC-CV protocols to avoid sulfation. Ideal for Class I/II forklifts, it offers rugged performance but demands regular maintenance like watering and terminal cleaning.
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What does “18-125-15” in the battery model signify?
The code 18-125-15 breaks into three segments: 18 cells (36V total), 125 cm length, and 15 cm cell height. This standardized naming helps identify voltage, footprint, and stack height for forklift compatibility. Pro Tip: Measure your forklift’s battery compartment before purchasing—mismatched dimensions cause installation failures.
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Each cell generates 2V, so 18 cells in series create a 36V system. The 125 cm length suits standard forklift trays, while the 15 cm cell height optimizes electrolyte volume for 875Ah capacity. For example, a 2022 Hyster H2.5XT forklift uses this battery for 10–12 hour shifts. But what if the tray is shorter than 125 cm? Adaptor kits risk stability issues. Always cross-check OEM manuals.
| Model Segment | Meaning | Importance |
|---|---|---|
| 18 | Cell count | Determines voltage (36V) |
| 125 | Length (cm) | Forklift tray compatibility |
| 15 | Cell height (cm) | Capacity and maintenance access |
What are the technical specs of a 36V 875Ah forklift battery?
A 36V 875Ah battery delivers 31.5kWh energy, weighing ~1200–1400 kg. Dimensions: ~125x85x70 cm (LxWxH). Designed for 1500+ cycles at 80% DoD, it uses thick lead plates for high-current resilience.
This battery supports 400–600A discharge rates, critical for lifting 2–3-ton loads. Charging takes 8–10 hours via 36V chargers with temperature compensation. However, why does cycle life drop in high-heat environments? Heat accelerates corrosion, reducing lifespan by 40% above 35°C. Pro Tip: Use thermal sensors during charging—every 5°C below 25°C extends cycle count by 15%.
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| Parameter | 36V 875Ah | 48V 650Ah |
|---|---|---|
| Energy | 31.5 kWh | 31.2 kWh |
| Weight | 1350 kg | 1100 kg |
| Typical Runtime | 10–12 hours | 8–10 hours |
How to charge a 36V 875Ah forklift battery safely?
Use a 36V industrial charger with CC-CV stages. Initiate charging at 44V (2.45V/cell) until current drops to 3% of Ah rating. Terminate at 45V (2.5V/cell) to prevent overcharging.
Charging generates hydrogen gas—ventilation is mandatory. For instance, Amazon warehouses use explosion-proof fans near charging stations. But what if the battery feels hot mid-charge? Immediately pause and check for faulty cells. Pro Tip: Schedule charging after 8-hour cooldowns to minimize gassing. Transitioning to opportunity charging? Limit to 20–30% top-ups to avoid plate stress.
Which applications use 36V 875Ah batteries?
These batteries power Class I cushion-tire and Class II narrow-aisle forklifts. Common in cold storage, ports, and manufacturing, they handle 8–12 hour shifts with 2,000–3,000 kg lifts.
Beyond forklifts, they’re used in airport tow tractors and mining sweepers. For example, a Toyota 8FGU25 forklift with this battery lifts 2.5 tons for 100 cycles daily. However, why avoid using them in automated guided vehicles (AGVs)? AGVs need lithium’s fast charging—lead-acid’s 8-hour charge disrupts 24/7 operations.
How to maintain a 36V 875Ah battery?
Check electrolyte levels weekly—top with distilled water to cover plates by 6–8 mm. Clean terminals monthly using baking soda paste to prevent corrosion. Equalize every 30 cycles.
After 500 cycles, conduct a capacity test. But how to detect early sulfation? Voltage drops below 1.8V/cell under load indicate trouble. Pro Tip: Rotate batteries among fleets—this balances wear and extends average lifespan by 20%.
What safety risks come with 36V 875Ah batteries?
Risks include acid spills, hydrogen explosions, and crush hazards. Always wear PPE (gloves, goggles) during maintenance. Use insulated tools to prevent short circuits.
In 2023, a Chicago warehouse fire traced to a corroded terminal igniting hydrogen. Practically speaking, install smoke detectors near charging areas. Why are damaged trays dangerous? They shift batteries during lifts, risking acid leaks. Secure batteries with hold-downs rated for 1,500 kg lateral force.
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FAQs
Yes, but verify tray weight limits—lithium batteries are lighter, requiring counterbalance adjustments for stability.
How long does a 36V 875Ah battery last per charge?
8–12 hours under moderate loads. High-intensity use (e.g., cold storage) reduces runtime by 30%.
How often should I water the battery?
Every 5–10 charging cycles, or when electrolyte dips below plate tops. Use distilled water only.
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