ProSeries, 12V/24V Jump Starter, 4400 Peak Amps, Digital Display, On/Off Switch, USB Port, 12V DC Power Outlet, ReverseConnection Warning, Fully Automatic, Prevents Overcharging By Monitoring & Switching To Maintenance Mode When Fully Charged, LED Indicators, Touch Pad Controls For Ease & Accuracy, Built In Cord Management, Unique Recessed Channel Keeps Power Cord & Cables Neatly Wrapped For Storage, High Impact Molded Case, Rustproof & Non-Conductive, 50 State DOE Compliant.