![BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube](https://i.ytimg.com/vi/6ur-itzUyvo/maxresdefault.jpg)
BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube
![Amazon.com: 61129217031 Battery Positive Terminal Cable (Plus Pole) Compatible with BMW E82 E84 E88 E90 E91 E92 128i 135i 325i 325xi 328i 328xi 330i 330xi 335d 335i 335is 335xi M3 X1 61126988974 : Amazon.com: 61129217031 Battery Positive Terminal Cable (Plus Pole) Compatible with BMW E82 E84 E88 E90 E91 E92 128i 135i 325i 325xi 328i 328xi 330i 330xi 335d 335i 335is 335xi M3 X1 61126988974 :](https://m.media-amazon.com/images/I/61K+YoLZCKL.jpg)
Amazon.com: 61129217031 Battery Positive Terminal Cable (Plus Pole) Compatible with BMW E82 E84 E88 E90 E91 E92 128i 135i 325i 325xi 328i 328xi 330i 330xi 335d 335i 335is 335xi M3 X1 61126988974 :
![Amazon.com: EMIAOTO Pipe Battery Plus Positive Battery Lead 6938504 6938501 for BMW E90 3er E91 E92 : Automotive Amazon.com: EMIAOTO Pipe Battery Plus Positive Battery Lead 6938504 6938501 for BMW E90 3er E91 E92 : Automotive](https://m.media-amazon.com/images/I/51TW47lwSvL._AC_UF894,1000_QL80_.jpg)
Amazon.com: EMIAOTO Pipe Battery Plus Positive Battery Lead 6938504 6938501 for BMW E90 3er E91 E92 : Automotive
![Battery Help, what's the purpose of this grey hose? Need to change the battery but the only one locally available in this size has no port for this hose to be attached. Battery Help, what's the purpose of this grey hose? Need to change the battery but the only one locally available in this size has no port for this hose to be attached.](https://preview.redd.it/vl6j58yg04571.jpg?width=640&crop=smart&auto=webp&s=9a6c329a839f58ae214c97a60dcf174b456829e8)
Battery Help, what's the purpose of this grey hose? Need to change the battery but the only one locally available in this size has no port for this hose to be attached.
![BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube](https://i.ytimg.com/vi/hhLaVWPb-bc/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLA3UkKIYnIa0LN1npMLel3WmdljyA)
BMW E90 3 Series Battery Replacement With Registration & Coding. Switch From 90 AH to 80 AH - YouTube
![Amazon.com: Replacement Key Battery VL2020 Fit for BMW 1 3 5 6 7 Series E90 E92 E93 Entry Keyless Remote Smart Remote Contril Key Fob : Electronics Amazon.com: Replacement Key Battery VL2020 Fit for BMW 1 3 5 6 7 Series E90 E92 E93 Entry Keyless Remote Smart Remote Contril Key Fob : Electronics](https://m.media-amazon.com/images/I/61brz7TAqzL.jpg)