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Old 01-30-2012, 01:34 AM
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bluebee bluebee is offline
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Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
For the cross-linked record, there is a discussion of the $155 AGM batteries for the E39 here today:
- E39 (1997 - 2003) > Battery Question

Originally Posted by bmw_n00b13 View Post
My car has had a few no-starts due to a flat battery; I'm not entirely sure of the cause but the battery is 5 years old, so assuming it fails a battery test when I get a tester, I'm looking for a replacement.

The subject has been beaten to death; I know the standard response is the duralast 49-dl, but I'm interested in something that may be able to handle more abuse. I make a lot of short trips with long sitting periods in between, and occasional long 2+hr highway trips.

I'm wondering if it's possible and worthwhile to install an AGM battery or if the E39 charging system won't support it. Any experiences?

I'd love to get a true OEM Varta but they're not available in north America.
Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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