The Tescom DC UPS 18W offers immediate power to your devices in the event of a power outage. This device smoothens fluctuations, shielding against sudden increases in power voltage, all while boasting a lithium battery with a substantial energy reserve. It powers all compatible devices (Smartphone, MP4 and others) and at the same time can charge devices via USB port (5V/ 2.0A). It is exceptionally convenient, featuring an LED indicator displaying its remaining energy levels (in increments of 25%, 50%, 75%, 100%), ensuring that you retain control at all times.