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 18V and 21V 4.0Ah rechargeable lithium-ion tool battery packs are designed to provide reliable, high-energy power for a wide range of cordless power tools. Built with advanced lithium-ion technology, these batteries deliver a strong, consistent voltage output that ensures stable torque and performance throughout the entire discharge cycle.
Available in 4.0Ah, 5.0Ah, and 6.0Ah capacities, they offer flexible runtime options to match various working demands. The higher amp-hour ratings translate into longer operational time per charge, allowing users to complete more tasks without frequent recharging. Whether for drills, impact drivers, saws, or grinders, these packs provide a powerful, lightweight, and efficient energy source.
Each pack is typically constructed from high-quality 18650 or 21700 lithium-ion cells, configured to balance capacity, output, and thermal safety. Integrated protection circuits guard against overcharge, over-discharge, short-circuit, and overheating, ensuring safe and durable operation even under heavy load conditions.
The 18V series suits most standard power tool systems, offering an ideal balance between weight and performance, while the 21V models deliver higher voltage for applications requiring extra torque or continuous power draw. With fast-charging capability and minimal self-discharge, these battery packs represent a cost-effective and eco-friendly solution for professional tradespeople and DIY users alike.
Lightweight, powerful, and built for endurance, 18V and 21V lithium-ion tool batteries continue to redefine cordless tool performance—combining efficiency, durability, and versatility in one compact energy system.
What’s inside the battery pack
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