Topband 48v 20ah rechargeable lifepo4 battery pack for electric two-wheeler
1. Feature:
2. Specification
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| 2.1 | Normal capacity | 20Ah | |
| Minimum capacity | 19Ah | ||
| 2.2 | Nominal energy | 1.024kWh | |
| 2.3 | Nominal voltage | 51.2V | |
| 2.4 | Internal resistance | ≤60mΩ @1kHz AC | |
| 2.5 | Normal charge voltage | 57.6±0.5V | |
| 2.6 | Float charge voltage(for Standby use) | 54.4±0.8V | |
| 2.7 | Allowed MAX charge current | 20A | |
| 2.8 | Recommended charge current | 4A | |
| 2.9 | Allowed MAX discharge current | 30A | |
| 2.10 | End of discharge voltage | 50V~55V | |
| 2.11 | Pulse discharge current | Withstand the 50A/0.5s | |
| 2.12 | Dimension | Length 325 ±2 mm | |
| Width 185 ±2 mm | |||
| Height 180 ±2 mm | |||
| 2.13 | Weight (No accessories) | About: 10Kg | |
| 2.14 | | Charge | 0~43℃ |
| Discharge | -20~60℃ | ||
| 2.15 | Self-discharge rate | ≤3%/Month; ≤15%/ year | |
| 2.16 | | ≤1month | -20~+60℃,5~75%RH |
| ≥3month | -10~+43℃,5~75%RH | ||
| 15~33℃,5~75%RH | ||


4. Circuit Protection
| | | |
| 4.1 | | | 3.65±0.03V |
| 3.34±0.03V | ||
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| 4.2 | | | 2.50±0.03V |
| 2.90±0.03V | ||
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| 4.3 | | | 34A~36A,delay time 0.5~1.5s |
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| 34A~36A,delay time 0.5~1.5s | ||
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| 4.4 | | | |
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| 4.5 | MOS | | |
5.Transport & Store
The battery need to be charged every 6 months if out of use
No fall down, no pile up over 6 layers, and keep face up.