Hello together, I have a 7 year old car battery here. After 100km drive, the measured voltage was 12,4v. According to the workshop, the battery still had about 50% capacity and would probably be due sooner or later. I have charged it now with the Ctek-MXS 5.0 and also sometimes worked with the record program. Since yesterday the battery hangs on my multimeter and I have the voltage logged (without charging the battery!). who fell from 13.13V (at the start of the log process) to 12.66V. Does someone have a tip to maintain the lead battery better or to revive it? Thank you, Matze