About This Item: 【More Powerful Booster For Car Battery】Car jump starter has enough power (600A peak current) to jump start most 12 volt vehicles on the road! (up to 6.0L gas or 3.0L diesel engines) Works with cars, motorcycles, watercraft, lawnmowers, yachts, boat, pickup, snowmobiles, even in extreme temperature(-4°F~149°F) 【Portable Emergency Power Bank】Not only as a car battery jump starter, but also can used as an emergency power bank. Designed with USB output (5V/2A), the quick charge 3.0 USB port can adjust power output to fully charge your cellphones, tablets, and other mobile devices at the fastest speed possible .