The Fein GBA AS 2.0 18V 2.0Ah Li-Ion Battery is ideal for trade professionals and DIY enthusiasts that use Fein cordless power tools. That being said, because this is part of Fein's AMPShare series, not only is it compatible with all other Fein AMPShare cordless tools but also Bosch Professional 18V cordless systems as well. This makes it a truly versatile battery pack, but it is also highly efficient. Fein's Electronic Cell Protection prevents overload, overheating and total charge so that this battery performs at its best and for longer. Compatible with all 18V cordless tools with AMPShare or Bosch Professional 18V cordless interface Features Provides extreme performance and longevity for long lasting use Electronic Cell Protection prevents overload, overheating and total discharge Offers impressive flexibility. It is compatible with all Fein AMPShare and Bosch Professional 18V cordless systems Comes With 1 x 2.0Ah Battery