Steelite 21V 4.0Ah Lithium-Ion Replacement Battery Pack, High-Capacity Rechargeable Battery, Compatible Cordless Power Tools for Extended Runtime

Battery Specifications: The STEELITE 21V 4.0Ah Lithium-Ion Replacement Battery Pack features a capacity of 4000mAh, a maximum voltage of 21V, and a power output of 80Wh. It is a high-quality, rechargeable lithium battery designed for long-lasting performance
Wide Compatibility: Designed specifically to be compatible with STEELITE 21V cordless power tools, this battery ensures seamless operation and performance across all compatible tools
Safety Features: Equipped with an intelligent protection system and high-quality cells, this battery safeguards against short circuits, overcharging, discharging, and overheating. It has passed a 1.5-meter drop test for added durability and safety
Ultra-Low Self-Discharge: Featuring a low self-discharge design to ensure high performance, this battery maintains its charge for extended periods. For optimal lifespan, it is recommended to recharge the battery every 3 to 6 months when not in use
Enhanced Performance: Includes a power indicator light and a heat-dissipating vent design to accelerate battery cooling, ensuring optimal performance and longevity during use

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