This charger with frame charges wireless batteries anytime and anywhere, without having to remove them from the tool. The unique CoolPack design offers advanced heat conductive housing to help keep the battery cool and live up twice as long. The new 2.0Ah 18V wireless charging SlimPack battery offers more run time and two times longer life with unique CoolPack design technology. The advanced heat conductive housing keeps the battery cooler for long life. The compact size and lightweight make it perfect for professional work overhead. An integrated fuel gauge makes checking charge status. And working in cold weather is no issue down to -20°C (-4°F).