Description
| No. | Product Description | Parameter 1 | Parameter 2 | Parameter 3 | Parameter 4 |
|---|---|---|---|---|---|
| 1 | Electrochemical System | NCA | NCA | LFP | LFP |
| 2 | Cell Model | 18650 | 21700 | 26700 | 32700 |
| 3 | Cell Capacity | 2.6Ah | 5Ah | 5Ah | 6Ah |
| 4 | Configuration | 4S4P | 4S2P | 5S2P | 5S2P |
| 5 | Nominal Capacity | 10.4Ah | 10Ah | 10Ah | 12Ah |
| 6 | Rated Power | ≈153Wh | ≈148Wh | ≈160Wh | ≈192Wh |
| 7 | Dimensions | L85×W80×H70 mm | L90×W72×H45 mm | L135×W72×H55 mm | L165×W71×H65 mm |
| 8 | Nominal Voltage | 14.8V | 14.8V | 16V | 16V |
| 9 | Standard Charge Current | 5A | 5A | 5A | 5A |
| 10 | Standard Discharge Current | 5A | 5A | 5A | 5A |
| 11 | Battery Cell Charging Cut-off Voltage | 16.8V | 16.8V | 18.25V | 18.2V |
The 20V 8Ah and 21V 4Ah cordless power tool batteries are designed for demanding industrial and professional applications where reliability, runtime, and consistent power delivery are critical. Built with advanced lithium-ion cell technology, these batteries deliver high discharge rates and stable voltage output, ensuring that drills, impact wrenches, saws, and grinders perform at full capacity even under heavy load conditions.
With 8.0 amp-hour and 4.0 amp-hour configurations, users can choose between extended runtime and lightweight mobility. The 8Ah version offers long operating cycles for continuous work, while the 4Ah pack provides a compact option ideal for overhead or portable use. Both types employ premium 18650 or 21700 lithium cells, ensuring high energy density, low internal resistance, and excellent thermal stability.
These industrial-grade battery packs feature integrated protection circuits against overcharge, over-discharge, short circuit, and temperature overload, extending overall service life and maintaining safety during intensive operation. The 20-volt platform is widely compatible with many cordless tool systems, delivering optimal torque for drilling through wood, metal, or concrete. Meanwhile, the 21-volt variant supplies slightly higher peak voltage, supporting high-performance tools that require consistent current flow.
Ideal for manufacturing, construction, maintenance, and other heavy-duty environments, these cordless power tool batteries combine durability, efficiency, and convenience. Their quick-charging capability, long cycle life, and lightweight design reduce downtime and increase productivity. Whether used by industrial professionals or workshop technicians, the 20V 8Ah and 21V 4Ah lithium-ion batteries represent a dependable energy solution for modern cordless power systems.
What’s inside the battery pack
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