How to Replace Your BMW i3 12v Battery - Part 2

Part 1 video was a detailed description with tips on how it is done. Part 2 is the full demonstration from removal, preparing the battery and reinstallation. Video includes how to register the battery for $55 ($32 for the app + $23 for the OBD2 reader) instead of paying the dealer over $200.


8/13/20 Update:
A couple hours after producing and uploading this video, the check engine light (CEL) went off on its own. I'll keep an eye on it, but it looks like the issue is fully resolved. Drove the car 80 miles today and everything is working as normal.



0:16 Disconnecting the high voltage battery from the 12v battery.
0:45 Remove the negative terminal.
1:16 Removing the hose.
1:37 Removing the battery bracket.
2:12 Tip on using the extension on the ratchet.
2:40 Tilting the battery to get access to the positive terminal.
3:53 Removing the battery from the car.
4:07 Comparison of old battery vs new.
4:13 Removing old parts from the existing battery to place onto the new one.
7:21 Attaching the positive terminal back onto the new battery.
8:11 Sparks go flying!
8:51 Warning when reinstalling the battery terminals.
9:30 Putting the battery bracket back on.
9:45 Reconnecting the high voltage connector to the 12v battery.
10:39 Wireless OBD2 reader introduction.
11:10 How to use the OBD2 reader.
11:40 Putting the frunk tub back into place.
12:00 Charging issue resolved.
12:26 Display showing "Unable to charge" error is gone.