BMW Diamond Key Battery Replacement

You win some and you lose some. Sadly in this case I was 50/50. Once key works after the battery replacement and the other doesn't. You'll find these diamond keys on the e38, e39, e46, e52, e53, e60, e63, e64, e85, e86 at different times in their production.
Here are some of the tools I used to make this repair easier:
Here is the battery I used- amzn.to/3yhAno1
Super Glue- amzn.to/3QBiqan
Soldering iron- amzn.to/3UtWPSp
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Video/Creator Tools and Equipment-
Iphone 14 Pro
DJI Osmo 6- amzn.to/3W5bsLd
DJI Mic- amzn.to/3UO1XPp
DJI Action 3- amzn.to/42Z5WNl
DJI Action Monopod- amzn.to/3r4zCLO
Sony batteries and charger- amzn.to/3Qs9IeC
Sony ZV E10- amzn.to/3XlcC7f
Sony 18-105mm Lens- amzn.to/49UHOyX
Sony 11mm (WIDE) Lens- amzn.to/3Jwh1y9
Sigma 30mm Lens- amzn.to/3QuPGA2
Small RGB lights- amzn.to/4a2HJcf
Battery-powered cob light- amzn.to/4biGCq4
Small Rig Cage- amzn.to/3JWqtLw
Tripod- amzn.to/3FEynYq
Heavy Duty Tri-pod- amzn.to/4abJOmA
Video Lighting- GVM 800D with stand-amzn.to/45LmLxJ
Soft Box- amzn.to/3XqYUQn
Portable Video Light- amzn.to/3PuspOZ
Moment IPhone Case-amzn.to/43msqZp
Phone Tripod Mount- amzn.to/3N8DSSO
Editing Software\Equipment
Davinci Resolve Studio
Editing Mouse- amzn.to/42RY1RS
Samsung 2TB SSD- amzn.to/3Ju6jIK
Side note- This DIY is not intended as instructional content. It is merely entertainment for you to do what you wish with. I’m just a guy with an awesome beard doing stuff I love. This content should not be used as a substituted for the advise of an appropriately qualified and licensed professional.