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 08 xc 08 mxs 36 mxs 50 or mxs 70 to the comfort indicator for rec