CTEK (56-870) Comfort Indicator Cig Plug Battery is charged through the vehicles 12-volt socket The comfort indicator shows how much power is left in the battery Made of high-quality materials for long-lasting dependability Compact to easily fit in your glove box or center console Compatible with US 0.8, MUS 3300, MUS 4.3, MXS 5.0, CT5 Time To Go & MUS 7002 battery chargers