High-capacity 21V rechargeable lithium-ion battery pack compatible with cordless impact wrenches, angle grinders, hammer drills, and screwdrivers. Below are the key specifications.
| Specification | Details |
| Model | 21V-Universal-PowerTool-Battery |
| Nominal Voltage | 21V (5S) |
| Nominal Capacity | 2000mAh / 3000mAh / 4000mAh (customizable) |
| Battery Type | Lithium-ion (18650 / 21700 cells optional) |
| Compatibility | Cordless Impact Wrench, Angle Grinder, Hammer Drill, Screwdriver, and other 21V power tools |
| Continuous Discharge Current | 15A – 25A (depending on capacity) |
| Peak Discharge Current | Up to 30A |
| Charging Voltage | 21V charger (CC/CV mode, 25.2V max) |
| Cut-off Voltage | 15V |
| Standard Charging Current | 1C |
| Max Charging Current | 2C |
| Configuration | 5S1P / 5S2P / 5S3P (depending on capacity) |
| Weight | Approx. 400g – 800g |
| Dimensions | Customized to power tool housing |
| Casing Material | ABS + PC Flame Retardant Housing |
| Interface | Standard Power Tool Connector / Custom Plug |
| Cycle Life | ≥ 500 cycles @ 80% DOD |
| Operating Temperature | Charge: 0℃ ~ 45℃ / Discharge: -20℃ ~ 60℃ |
| Storage Temperature | -20℃ ~ 45℃ |
| BMS Protection | Overcharge, Over-discharge, Over-current, Short-circuit, Temperature |
| Applications | Cordless Impact Wrench, Angle Grinder, Hammer Drill, Screwdriver & Other 21V Power Tools |
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