M3 F80 battery issue

[PAOK]

Does anyone knows how to ”wake up” a lithium battery? I assume that connectors are open and the control unit which monitors voltage in the car cannot recognize outcoming powersupply. I have a battery charger which is suitable for lithium batteries charging.

Thanks in advance!

[M-Attack]

Originally Posted by PAOK

Does anyone knows how to "wake up" a lithium battery? I assume that connectors are open and the control unit which monitors voltage in the car cannot recognize outcoming powersupply. I have a battery charger which is suitable for lithium batteries charging.

Thanks in advance!

Had my battery replaced last week. The tech at BMW once it's dead you can't recharge it. You may want to check with BMW. Mine came off a 2015 and they told me they replaced many of them already.

[Agent - ///M]

Mine was recently replaced also. Once it's dead, there's no coming back...

[aboulfad]

Folks, before you all declare the OP's battery is really dead, read here http://f80.bimmerpost.com/forums/sho....php?t=1217987
A LifePO4 can disconnect itself for various reasons (mentioned in the docs in my thread), and to try to wake it, your LifePO4 charger must have a reset mode, read the manual. CTUK, Optimate and others support that mode.

[lionroar]

2015 M3, “Battery not charging” warning message. The tech replaced alternator and battery under warranty.

[rvacha]

aboulfad speaks wisdom.