![Just replaced my battery on a 2010 E90. Does it need reprogramming? Not sure it has the power management system? : r/BmwTech Just replaced my battery on a 2010 E90. Does it need reprogramming? Not sure it has the power management system? : r/BmwTech](https://i.redd.it/lu3uozrivxn71.jpg)
Just replaced my battery on a 2010 E90. Does it need reprogramming? Not sure it has the power management system? : r/BmwTech
![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: 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)
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
![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.
![Amazon.com: EMIAOTO Positive Terminal to Battery Cable for BMW E90 E91 E92 E82 E84 E88 X1 61129217031 : Automotive Amazon.com: EMIAOTO Positive Terminal to Battery Cable for BMW E90 E91 E92 E82 E84 E88 X1 61129217031 : Automotive](https://m.media-amazon.com/images/I/41nMBd11r1L._AC_UF894,1000_QL80_.jpg)