CORE18V 4 Ah AMPShare Battery Pack

Electronic cell protection reliably protects the battery from overload, overheating, and total discharge. Compatible with AMPShare or Bosch Professional 18V battery interface. Battery status indicator signals when charging begins and when charging completes.You may also like Fein Slugger Annular Cutter 1-3/16 X 1 Inch Hmu Weldon.