The SC1353 Electric Battery Charger with Engine Starter, Boost, and Maintainer 200 Amp/40 Amp, 12V fully automatic unit offers a 40 Amp boost mode that quickly brings deeply discharged batteries to life and a 200 Amp engine start for cars, trucks, SUVs, and RVs. This charger features strong starting power, a heavy-duty transformer, LED indicators and color-coded clamps with a 6-foot power cord and output cables for 12-feet of total reach. This charger is microprocessor-controlled with multi-stage charging, auto voltage detection, automatic amperage adjustment, a built-in battery and alternator tester, and reverse hook-up protection. Compact wheels allow for easy transport and storage with a durable case and retractable handle. Schu Eco Energy meets the highest industry standards. Compatible with standard and AGM batteries. Microprocessor controlled automatically adjusts the amperage rate to charge and maintain Float mode monitoring automatically maintains optimum battery charge Multi- stage charging for added precision, safety battery life Battery and alternator tester provides charge level and helps diagnose electrical problems Digital display, LED indicators and button controls for ease accuracy Clamps on front of unit