Milwaukee 48-11-1024 Value Pack 14.4-Volt 2.2 Amp Hour NiCad Slide Style Battery, 2 Pack 2.2 amp hour capacity for longer run times Use of quality 1.2 Volt Ni-Cad Battery Cells Milwaukee 48-11-1024 14.4 Volt Batteries are under-rated, tested out at 19.65 Volts!