The first major technological innovation in battery chargers in decades, SOLAR's exclusive Transoid™ transformer design represents a breakthrough in charging efficiency, lower power consumption and longer product life. Chargers with the Transoid design have temperatures up to 100 degrees cooler than traditional chargers and power consumption up to 90 percent lower (in trickle charge mode) than traditional chargers.

The Solar OS 6120 wheel charger has multiple 12-volt charging rates and 200 12-Volt engine starting amps. This charger meets a wide variety of shop needs. A two-hour timer provides improved charging safety and convenience, while a test function provides a snapshot of battery function and alternator output.