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      01-12-2022, 11:57 PM   #24
MilehighM3
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Drives: Harrop E90 M3
Join Date: May 2011
Location: Colorado Springs

iTrader: (14)

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2009 E90 M3  [6.50]
Sorry for the late reply, been busy. I almost created and posted a YouTube link for this but here's a few pics to show the process of disconnecting the 48v battery to charge your 12v in storage.

The battery charging in idrive is found under driving info, power flow to charge your 48v battery.


I hope this helps. Let me know if you're successful and what the specs are again on your 12v charger.

Edit: mobile uploads jumbled the order of the pictures. 🤦🏻*♂️ hopefully you get the idea/process. 3,1,2.4.5 for disconnecting the 48v system.
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