Battery2go - 1 year warranty - 3.7V Battery For RAZER Mamba, RZ03-00120100-0000, RC03-001201, FT703437PP Capacity: 900mAh / 3.3Wh Type: Li-ion Volts: 3.7V Size : 43.01 x 35.24 x 8.58mm Certificated with ISO9001, RoHS & CE;