DON'T REPLACE YOUR BMW BATTERY UNTIL YOU WATCH THIS!

BMW F30 Battery information:
Part Number - 61 21 5 A40 E29
Size - Group 49
Amp Hours - 92ah
Cold Cranking Amps - 850CCA

Carly Adapter (requires "Premium" version) https://bit.ly/3c1OyD0
CTEK Battery Charger https://bit.ly/3Qzf8m6
Wera Tool Set https://bit.ly/3dzj2g9
(affiliate links)

Tools required:
10mm socket
13mm socket
Super human strength

Time to install:
45 minutes

Cost:
Battery - $276
Deposit - $18 (refunded upon return of old battery)
MI sales tax - $17

In this video, I replace the battery in my BMW F30 340i. It was surprisingly difficult to find the correct battery for my car. The original part number had been discontinued, there was little to nothing in stores or online with matching specs, and information on the forums was contradictory or incorrect.

Luckily my local dealership had the battery in stock and it wasn't much more expensive than the batteries at the auto part stores. I wish I had just gone to the dealership first and saved myself the time and frustration. Keep in mind there is still a HUGE savings if you install and code it yourself rather than having the dealership install it. You will pay almost double if they install it for you.

If you're physically able to replace your battery at home (I'm not kidding, this sucker is HEAVY), you'll need to register the battery to let the car know that it has been replaced. I used Carly, but BimmerLink will work too. If you use BimmerLink and need to change the amp hours, you will need BimmerCode as well. With Carly you can do both in one app.