There is nothing worse than being halfway through a job and your battery dies. Batteries.com can keep your Panasonic power tool working with a quality battery. These nickel-metal hydride (NiMh) power tool batteries are made from the finest cells and parts. They are designed to meet or exceed the original equipment specifications for your Panasonic power tool. NiMh less prone to memory effect problems than NiCd Lightweight compared to NiCd Charge up to 1000 times