VINTRONS 850mAh Battery For Panasonic KX-TG5633, KX-TG5634, KX-TG5651, KX-TG5652, Capacity: 850mAh Type: Ni-MH Volts: 3.6V Size : 54.16 x 31.92 x 11.17mm Certificated with ISO9001, RoHS & CE;