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 Model OS 6130 wheel charger is SOLAR's most popular model. It features multiple charging rates up to 60 amps and 250 amps of 12-volt engine starting assistance. A two-hour timer provides improved charging safety and convenience, while a test function provides a snapshot of battery function and alternator output.