What to do?
CTEK MXS 5.0 order at Amazon overnight and we hope that it does its job!
And that does it!
It now has an empty 40Ah car battery charged during the period from midday until night - with several sub-zero temperatures, because the car is on the road. No problem, the engine starts, battery ok. It's amazing how quickly that goes.
The charger is its price more than worth it. So easily I had not imagined it, so 5 stars!
The processing is very well executed, and durable and the operation fairly foolproof. Polarity reversal is recognized correctly and does not cause damage.
Would I buy again at any time!