GOOLOO is a Supersafe and reliable automotive jump starter offering the users maximum power.This is a new 2000A jump starter. GOOLOO 2000A jump pack is not only your regular car jump starter,it's also your all-weather companion, a helping hand when you need it most and a portable battery charger that can charge all your devices at once. It has two USB ports ((5V/9V/12V) and (5V/2.4A).In addition, the 44.4Wh lithium polymer large-capacity battery can efficiently and lastingly power your equipment. With this GOOLOO auto pack, you don?t need to worry about outings without electricity. This GOOLOO jumper starter has built-in 10 kinds of general protections, The intelligent jump cable can read the vehicle's battery voltage for enhanced diagnostics of the battery condition and notify you the wrong operation by warning symbol and buzzing.