What Are Specs For 36V 18-85-17 Daewoo BC15T Battery?
The Daewoo BC15T 36V 18-85-17 battery is a lead-acid replacement designed for electric forklifts, delivering 36V nominal voltage and 850Ah capacity (5-hour rate). Key specs include 680x350x520mm dimensions, 150kg weight, F11 terminal type, and LiFePO4 chemistry for 2,000+ cycles. It supports 180A continuous discharge with built-in BMS for overload protection. Charging requires 42V±0.5V CC-CV chargers.
36V 250Ah LiFePO4 Forklift Battery
What are the core specifications of 36V 18-85-17 batteries?
The Daewoo BC15T battery features 36V nominal voltage, 850Ah capacity (C5 rating), and LiFePO4 cells for 10–12-hour runtime. Key specs: 680mm L x 350mm W x 520mm H, F11 terminals, IP54 rating, and -20°C to 55°C operational range. Pro Tip: Verify terminal orientation—reverse polarity triggers BMS lockouts requiring factory reset.
Beyond voltage and capacity, the 18-85-17 model prioritizes high-cycle durability through modular cell design. Each 3.2V LiFePO4 cell delivers 200Ah, arranged in 12S configuration for 38.4V fully charged. The BMS enforces 2.5V–3.65V per cell limits, preventing deep discharges that slash lead-acid lifespan. A 150kg weight is 40% lighter than equivalent lead-acid units, reducing forklift energy consumption. For example, a BC15T forklift using this battery achieves 6–8 hours of pallet lifting versus 4–5 hours with lead-acid. Pro Tip: Always use anti-vibration pads during installation—LiFePO4 cells degrade 30% faster under constant shock loads.
| Parameter | 36V 18-85-17 | Lead-Acid Equivalent |
|---|---|---|
| Cycle Life | 2,000+ | 500–800 |
| Weight | 150kg | 240kg |
| Efficiency | 98% | 80–85% |
How do dimensions affect forklift compatibility?
Daewoo BC15T battery compartments require precise 680x350x520mm dimensions. Deviations over 5mm prevent secure mounting, risking terminal arcing during operation. Pro Tip: Measure compartment clearances vertically—some forklifts need 10mm overhead for ventilation.
Forklift battery trays are model-specific, making dimensional accuracy critical. While the 18-85-17’s 520mm height accommodates BC15T’s roll-out tray system, even 15mm excess could jam mechanical rollers. The 350mm width aligns with DIN-standard trays, but aftermarket modifications often create fit issues. Consider this: A Toyota 7HBWE23 forklift needs 700mm length—using the Daewoo 680mm battery would leave 20mm gaps requiring spacer shims. Always request 3D CAD files from suppliers for virtual fit checks. Pro Tip: Apply silicone grease to tray rails—reduces installation friction by 60%.
Why choose LiFePO4 over lead-acid for this model?
LiFePO4 chemistry offers 3× faster charging and zero maintenance vs lead-acid. For BC15T, this means opportunity charging during 15-minute breaks—impossible with lead-acid’s 8-hour absorption needs.
LiFePO4’s flat discharge curve maintains 36V±5% until 90% depth of discharge (DoD), whereas lead-acid voltages drop 20% after 50% DoD. This voltage stability prevents forklift performance decline during shifts. Thermal resilience is another key factor—LiFePO4 operates at -20°C without capacity loss, unlike lead-acid which fails below -5°C. Imagine a refrigerated warehouse: LiFePO4 batteries deliver full capacity at -15°C, while lead-acid units require hourly reheating. Pro Tip: Use active balancing BMS versions—they extend cell lifespan by 15% compared to passive systems.
| Feature | LiFePO4 | Lead-Acid |
|---|---|---|
| Charge Time | 2–3 hours | 8–10 hours |
| DoD Limit | 90% | 50% |
| Cycle Count | 2,000 | 500 |
What charging systems are compatible?
BC15T’s LiFePO4 battery requires 42V CC-CV chargers with CANBus communication for BMS handshake. Non-programmable units risk overcharging—LiFePO4 reaches 3.65V/cell at 100% SOC versus lead-acid’s 2.4V/cell.
Chargers must deliver 42V±0.5V with 85A max current (0.1C rate). CANBus protocols enable real-time SOC monitoring and temperature-based current adjustments. For instance, if the BMS detects a cell at 45°C, the charger reduces current by 50% to prevent thermal runaway. A common mistake? Using old lead-acid chargers that apply 43.8V—this overcharges LiFePO4 packs, triggering BMS disconnects after 20 minutes. Pro Tip: Install RFID-enabled chargers—they prevent unauthorized charging that voids warranties.
How does cold weather impact performance?
LiFePO4 BC15T batteries retain 85% capacity at -20°C versus lead-acid’s 40%. Built-in heating pads activate below 0°C, drawing 150W to maintain optimal 10–30°C cell temperatures.
In freezing warehouses, the battery’s self-heating function adds 5–7 minutes to charging but prevents lithium plating. Without heating, -10°C charging at 1C rate causes irreversible 8% capacity loss per cycle. Practical example: A −15°C cold storage facility using unheated LiFePO4 batteries loses 300 cycles—down from 2,000 to 1,700. Pro Tip: Pre-heat batteries for 20 minutes before shifts—improves discharge efficiency by 18%.
Battery Expert Insight
FAQs
Only if voltage/compartment dimensions match—Toyota 3-wheel models need 10mm shorter batteries. Always consult OEM specs first.
What’s the total energy capacity?
36V × 850Ah = 30.6kWh—sufficient for 8-hour shifts with 80% DoD. Lead-acid equivalents provide only 15.3kWh usable.