Batteries need an adequate charging state to ensure starting safety and a long life. The job of the new Comfort Indicator charging status display by CTEK is to determine the charging status and show it to the user at all times. How well the battery is charged is shown easily and immediately by means of the traffic light function. The best fact is that you can directly connect any XS800, XC800, XS 3600, XS 4003, XS 7000, XS 0.8, XC 0.8, MXS 3.6, MXS 5.0 or MXS 7.0 to the Comfort Indicator for recharging the battery or obtaining an optimum charging level. The indicator is green at charging states 12.85 Volt and becomes red at charging states 12.4 V. This gives recognition to the fact that batteries sulphate below 12.4 V.This text is machine translated.