Quote:
Originally Posted by Fanta
A very simple diagnosis.
Get a BMW battery retainer changer and leave it change for a few days and start it!
You will know whether you need a new battery or not, and return the BMW battery retainer.
Even you don't drive the car, E92 consume a lot of electricity from the battery.
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I use a charger regularly and my battery is still the original and coming up nine years. I don't have the issues discussed here.
