Battery CyberPower Standart series RС 12-28, voltage 12V, capacity (discharge 20 h) 28Ah, max. discharge current (5 sec) 390A, max. charge current 8.4A, lead-acid type AGM, terminals under bolt M6, LxWxH 166x175x125mm., full height with terminals 125mm., weight 9.1kg., operational life 6 years