Replacement for Power Tools Batteries AC Adapter, (This charger can charge our replacement power battery only). Voltage: 100-240V AC (Input), DC 21V / 1.0A(Output) Dimension: 71.80 x 44.90 x 50.50 mm, 5.50 x 2.10 mm (Output Plug) Condition: New, 1 year warranty! Weight: 125.70 g The charger must not be used for original Ni-MH, Ni-Cd tool batteries.