The Schumacher Electric 6V/12V 250A Manual Timer-Controlled Battery Charger and Jump Starter, No. SC1667, is a manual charger that gives users complete control over the battery charging process. Some of the benefits included in this unit are three boost modes for quickly and efficiently adding charge to deeply discharged batteries (50A: 12V, 25A: 12V, and 25A: 6V), a heavy duty metal case with an easy-to-read meter, a 135-minute manual timer, six-gauge booster cables, and a rate selection dial. The battery charger can reach up to 12' with a 6' power cord. This unit is for standard, AGM, and gel battery types.