... turns off automatically when battery lacks voltage for long time malfunction happened to electric supply,and when electricity recovery ... 0.5 whejn inversionOutput voltage (V)220±10%Response time when power cutms10ProtectionOver-load , short circuitMoment high voltage protection2Short ... 12V, 7/4AH1×12V, 7/4AH12V,7AH*2Change time8 hours charge to 90%Battery protectionCheck and protect auotomatically when ...