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4F40
| Item | Standard | Remark |
| Specification | 4F40 | |
| Nominal voltage | 12.0V | |
| Capacity | 40Ah | Discharge at 40A constant current to over-discharge protection. |
| Size（L*W*H） | 133x150x193mm | |
| Weight | 5.5±0.2kg | |
| Mass Ratio of Energy | 87Wh/Kg | |
| Standard Discharge | 40±1A | |
| Maximum Continuous Discharge Current | 300±0.5A | <3S |
| Discharge cut-off voltage | ≥8.0V | |
| Charge Voltage | 3.65±0.2V | |
| Standard Charge | 40±0.5 A | |
| Resistance | ≤8mΩ | Between discharge port of positive and negative extremes |
| Waterproof Level | IP56 | |
| Operating Temperature Range | -20℃～50℃ | |
| Storage Temperature Range | -40℃～50℃ | |
| Storage Humidity | 5%～90% | |
| Shell Material | ABS+PC |