The PowerShield DC Mini is designed to provide emergency power backup to all kinds of DC powered equipment including routers, modems (including fibre optic – ONT), VOIP phone systems, surveillance equipment, alarm systems and many critical telecommunications devices. The DC Mini can economically provide hours of operation during power failure. •Built in replaceable Li-ion batter •Auto start when plugged in •Embedded micro-controller •Multi-colour indicator •Manual power off switch port •Overload, short-circuit, over-charge and over-charge protection •2 Year Warranty