... solar ups with solar panel Main Functions:1) Inverter Function:To switch DC to AC 220V/50Hz or ... battery has no power,you just need to connect this device to AC mains,then it will charge the ... When comes net work electricity, it will transform to offer net work electricity automatically, and charging the ... UPS integrated all-in-one system, no need to buy other chargers, voltage stabilizers. 5)Extensible ...