The 4000 QuickCable 12 Volt Commercial Auto/Truck Jump Starter (Less Battery) is the perfect solution for Parking Lots, Garages and Auto Dealers. Heavy duty commercial grade construction combined with portability and power make this the best choice for your shop or fleet. 2 gauge 100% copper cables 62" long make jump starting cars and trucks a breeze, 500 amp clamps for durability and consistent connections, a Digital Voltmeter provides battery voltage status of internal batteries. The On-board 115 volt battery charger keeps the internal batteries charged and topped off overnight. Safety features include Reverse polarity alarm with light and buzzer and color coded clamps to prevent accidental hookup. Includes two 12-V DC power outlets to run accessories or inverters for 115 volt power. Recommended battery: Group 24 sealed lead acid. Also available with on-board air compressor, 5' air hose and integrated air gauge and inflator, 4010.