CTEK 56-531 Comfort Indicator Panel Designed to make the maintenance of the battery in the vehicle easy and convenient Easily shows the status on the battery and makes sure that the battery can always get the care it needs Prolongs the life expectancy of the battery as it makes sure it can always be fully charged Indicates when the harmful sulfation process begins FitsUS 800,MULTI US 3300,MULTI US 7002,US 0.8, andMUS 4.3, MXS 5.0, CT5 Time to Go battery chargers