Battery maintainers.....any recommendations?

[amk2912]

Originally Posted by JHZR2

How small is the 135i battery? Is it a standard group 48 or 49 battery, like most BMWs can take, or is it some tiny thing?

IMO, you have an internal short, which is not so severe that you loose a whole cell, but is present and just "sucks" energy out.

BTW, I like the charger you chose. I was going to recommend something like this:
http://www.batteryminders.com/batter...f-p-16133.html

So you have options for the charge rate, and also have the desulphidation mode, a smart float charge, etc. I think you got a good one.

It's the standard 12V 70Ah battery from the factory. I'll check the charge tomorrow and if it's dropped I'll refer it to the service dept under warranty.

[takahashi]

Guys just drive more to charge the battery, not leaving it in the garage!