AdirPro BDC58 Li Ion Battery for Sokkia SRX robotic total stations, SETX total stations, and GRX1 GPS receivers Equivalent to SokkiaBDC58 battery Rechargeable 7.2 Volts 5200 mAh capacity Compatible with Sokkia SRX robotic total stations, SETX total stations, and GRX1 GPS receivers