VINTRONS 2200mAh Battery for Sokkia SET 500, SET 510, SET 530, SET530R, SET530R3, SET530RK, SET5 30RK, SET5 30RK3 Capacity: 2200mAh / 16.16.28Wh Type: Li-ion Volts: 7.4V Size : 70.30 x 38.00 x 20.10mm Certificated with ISO9001, RoHS & CE;