Sold by CTEK, the Comfort Indicator Panel is designed and developed to make the maintenance of the battery in the vehicle easy and convenient. It easily shows the status of the battery and makes sure that the battery always gets the care it needs. The CTEK Comfort Indicator Panel can prolong the life expectancy of the battery as it makes sure it can always be fully charged and indicates when the harmful sulfation process begins. Designed to fit MULTI US 3300, MULTI US 7002, US 0.8, MXS 5.0, Lithium US, CT5 Powersport, MUS 4.3 Test & Charge, MUS 4.3 Polar, and CT5 Time To Go battery chargers. An indicator is the easiest way to monitor the charge in your battery. An accurate voltage reading for your battery is displayed two hours after youÆve used your vehicle. Green means the battery voltage is more than 12.65 V. No need for charging. Yellow means the battery voltage is between 12.4 and 12.65 V. ItÆs time to consider charging the battery. Red means the battery voltage is below 12.4 V. ItÆs definitely time to charge the battery.