100/80 Amp Charging Rate Selector Switch to provide the correct "FAST" "NORMAL" or "SLOW" charge rate (*)(*SLOW CHARGE 2 AMPS) 550 AMP BOOST/CRANKING CAPACITY Heavy duty oversized transformer, all copper, with silicon rectifier (includes spare rectifiers to prevent down time) FOR CHARGING: Conventional, Maintenance Free, AGM, Gel Cell, Deep Cycle, Marine Batteries POLARITY PROTECTED 10-FOOT POWER CORD ACTIVATES ANY BATTERY NEW EXCLUSIVE BATTERY TESTER TESTS CHARGING AND CRANKING SYSTEM CAR COMPUTER SAFE SHORT CIRCUIT AND OVERLOAD PROTECTED CHARGE SELECTION SWITCH TO DETERMINE DESIRED CHARGE RATE 1-HOUR TIMER EASY TO READ LARGE AMMETER EXCLUSIVE "550 AMP" SAFE INSULATED CLAMPS HEAVY DUTY "8 FOOT" DUAL WELDED CHARGING CABLES MADE IN U.S.A. SPECIFICATIONS IN PICTURE