500W 110V - 240V Black Portable Backup Power Pack with Polymer Lithium Battery​ Item Description: 1.Mini size, portable and convenient to carry; 2.Metal textured ion alloy, solidly constructed, smaller, lighter; 3.Diverse charge ways: Refuel from utility grid, car adapter or sunlight; 4.Power output mode: AC output and DC output; 5.Emergency jump starter function from 12V car engine start port; 6.Movable multifunctional solar power system for camping, long trip, earthquake,