The battery features superior construction, electronics, and performance to deliver more work per charge and over life than any battery on the market. The advanced design protects the against harsh jobsite environments. This protection routes water away from the electronics and out of the battery, extends run-time and life by minimizing heat, and prevents failures from vibration or drops. This design also allows the battery to operate in extreme cold weather conditions (below OoF/-18oC). Features overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. It also provides full system compatibility with 60+ M18? cordless solutions.