The peak jump starter is a 300 ampere jump starter with 600 peak amp of power. This unit has the peak exclusive low charge alert technology that warns the consumer when the jump start battery needs recharging. Low charge alert means you will always be ready to jump start your car when you need it most. Easier and safer to use than jumper cables. Exclusive low charge alert alarm signals owner when jumper needs chargingAccurate digital displaysExcusive external battery test featureUSB ports for charging electronic components on the goIntegrated AC charger