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Old 10-17-2016, 04:13 AM
Solaone Solaone is offline
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Location: Australia
Join Date: Oct 2016
Posts: 7
Mein Auto: X5 4.4 2002
Flat Battery

Hi all I'm new here so any help would be awesome........ My 02 X5 4.4 has done 315000 kms and has a problem with the battery if I don't use it over the weekend 2days, Monday morning it's dead flat.
It's a new battery only 3mths old, has anyone else had this problem?
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Old 10-17-2016, 06:47 AM
Doug Huffman's Avatar
Doug Huffman Doug Huffman is offline
Nuclear engineer
Location: Washington Island, Wisconsin, thru Death's Door
Join Date: Apr 2015
Posts: 4,482
Mein Auto: 2012 Feb 11 X5 35d (E70)
Batteries are not usually maintained or charged after manufacture, and with a nominal 1% self-discharge rate, a hundred days later they are dead dead dead.

You BMW will NEVER EVER fully charge its battery 100%.

Buy a SMART-CHARGER such as recommended by BMW and charge the battery regularly and frequently.
I am responsible for what I write, not for your understanding of it.
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Old 10-17-2016, 06:53 AM
gunyvw gunyvw is offline
Officially Welcomed to the 'Fest
Location: va
Join Date: Aug 2011
Posts: 663
Mein Auto: x5
you either have a bad cell in the new battery
...even low water will cause that
a power drain in the vehicle

have the battery replaced if you suspect it's just that
you replaced the old battery for the same or similar reason
the suspicion would be on the vehicles electronics
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