A true multitasker, the CAT CBC100E battery charger and battery maintainer is a high-efficiency solution for 12-volt WET, GEL and AGM batteries. It provides a powerful 100-amp engine start, 25 amps of charging and a 3-amp maintainer. The alternator check tests the vehicle’s alternator to indicate if it is operating properly, and electric pulse technology can help reverse sulfate build-up on battery plates to improve charge capacity.