Take control of the charging process with the Schumacher 6V/12V Timer-Controlled Battery Charger and Jump Starter. Use the 135-minute timer and the Charge Rate selector switch to customize charging to your needs. Featuring a robust 250-cranking-amp (12V) engine start capability, this charger has the strength to jump start everything from small cars to large RVs. 3 boost modes 50A 12V, 25A 6V, and 25A 12V bring discharged batteries back to life, while a 10A, 12V charge mode provides basic battery charging. The Schumacher charger is compatible with the majority of automobile battery types, including standard, AGM, and gel batteries. Other features include a built-in ammeter for monitoring the charging process, overload protection, and a handle for transport. Includes 6' output cables and a 6' power cord, plus the 6-ga. Booster cables remain flexible in cold weather. Color-coded, heavy-duty clamps. 135-minute timer Charge Rate selector switch 250-cranking-amp starting capability 3 boost modes to bring back dead batteries Works with most major vehicle battery types Built-in ammeter to monitor charging 6', 6-ga. output cables and 6' power cord Heavy-duty clamps Rugged metal housing Overload protection Handle for transport