Milwaukee 48-11-1024 14.4-volt 2.2 Amp Hour NiCd Replacement Battery Kit - 2 2.2 amp hour capacity for longer run times Use of quality 1.2 Volts Ni-Cad Battery Cells For Milwaukee 48-11-1024 14.4 Volts Batteries are under-rated, tested out at 2200 mAh, 19.65 Volts!