The Crown SC 4020-35 forklift requires a 36V 18-85-17 battery, which refers to a specific lead-acid traction battery configuration commonly used in electric forklifts. These batteries typically deliver 750–850 Ah capacity with dimensions around 610 mm (L) × 285 mm (W) × 300 mm (H). Pro Tip: Verify the battery compartment size and terminal alignment before purchasing—Crown forklifts often require exact form-factor matches for safe operation.
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What are the specifications for 18-85-17 batteries?
The 18-85-17 designation indicates a 36V battery with 18 cells, 850 minutes of runtime at 75A discharge (5-hour rate), and standardized BCI Group 17 dimensions. Designed for industrial applications, these batteries use thick plates (4–5 mm) for deep-cycle resilience and weigh approximately 350–400 kg.
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In practical terms, a Crown SC 4020-35 with this battery achieves 6–8 hours of continuous operation. Unlike automotive batteries, the 18-85-17 prioritizes steady current delivery over cranking power, making it ideal for material handling. How do you maintain such batteries? Equalize charging weekly using 2.4–2.45V per cell (43–44V total) prevents stratification and sulfation.
| Parameter | 18-85-17 | Standard 6V Cell |
|---|---|---|
| Voltage | 36V | 6V |
| Capacity (C5) | 850 Ah | 220 Ah |
| Cycle Life | 1,500 cycles | 500 cycles |
How do Crown forklift batteries differ from generic models?
Crown’s proprietary Fast-Charge Technology requires batteries with enhanced thermal tolerance (up to 60°C during charging). Their SC series batteries feature reinforced terminals and polypropylene cases resistant to acid spills and vibration damage—critical for warehouse environments. While generic batteries might fit physically, they often lack these durability features.
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Consider this: A Crown SC forklift averaging 15 starts/hour generates 50% more current spikes than typical models. Batteries with undersized intercell connectors (below 75 mm² cross-section) develop hot spots over time. Pro Tip: Use Crown-approved battery management systems to maintain warranty coverage—third-party BMS units often void support agreements.
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FAQs
Yes, but requires voltage matching (36V LiFePO4) and control system upgrades—Crown’s CAN bus communication needs lithium-specific BMS integration for safe operation.
How often should I water 18-85-17 batteries?
Check weekly during heavy use: maintain electrolyte 5–10 mm above plates. In temperature-controlled environments (20–25°C), monthly checks suffice.
