... battery has not been fully charged,then the solar controller can regulate it to charge the battery ... UPS power supply system.It make sure load can working well even if the electric ... 4)The inverter, net work electricity charger, solar controller and UPS integrated all-in-one system, no need ... voltage, over voltage,high-temperature, power-cut, over-load etc. fault warning. 9) CE, RoHS certificates. ...