The Bosch 1600A011T8 18V 4.0 Ah Battery is a lithium-ion battery compatible with every tool in the POwer For All 18V battery system. The reliably enduring power allows users to undertake virtually any DIY project in a single charge. It offers a long and consistent working life and is ideal for a wide range of house and garden tools in the Bosch range. Long run time allows users to undertake a huge range of DIY projects on a single battery charge Top performance and long battery lifetime One battery compatible for an entire Home Garden tools system.