Solid performance, innovative design, and long-lasting durability make the DSR ProSeries 275A 6V/12V Power Supply, Battery Charger, and Engine Starter (DSR122) the best choice for auto service professionals. It is energy efficient and fully automatic. Microprocessor controlled, the DSR122 features multi-stage charging, float mode monitoring, auto voltage detection, and reverse hook-up protection. This unit offers 65A constant power supply, 125A (6V) engine start, 275A (12V) engine start, 20A to 60A boost, 15A fast charge, and 4A maintain rates. Plus, it has Flash reprogramming and a memory saver mode. Product Features:125A (6V) engine start, 275A (12V) engine start, 20A to 60A boost, 15A fast charge, and 4A maintainCharges standard, AGM and Gel and deep-cycle batteriesPowerful enough for SUVs, trucks, and large enginesBoost mode quickly brings deeply discharged battery back to life65A Flash Reprogram modeMemory Saver mode for saving vehicle settings while changing the batteryMicroprocessor controlled and automatically adjusts the amperage rate to charge and maintainMulti-stage charging for added precision, safety, and battery lifeFloat mode monitoring automatically maintains optimum battery chargeReverse hook-up protectionDigital display, LED indicators, and push-button controlsStart/Stop interfaceExtra-long output cables with 17 feet of total reachRetractable handleSafe for outdoor use