Jim
Member
- First Name
- Jim
- Joined
- Dec 4, 2019
- Threads
- 3
- Messages
- 13
- Reaction score
- 8
- Location
- Connecticut
- Car(s)
- Mk5
- Thread starter
- #1
Does anyone know why the battery is so large in this car?
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They can. The issue is voltage is a poor method of determining state of charge. A battery at 12V (6 x 2V cells) may have a 115% capacity or it may have 15% capacity. Only way to know for sure is to put a load on it and measure individual cell outputs over its full discharge curve to cell end voltage.So, the batteries canāt be charged back up?
ClassicBecause itās a bmw, and they use big batteries
You're told that because your dealer had no idea what's going on. The code is there to specify the battery type and capacity so the ECU knows what charging profile to use on that specific battery. Nothing to do with the Vin. There are many people running smaller anti-gravity battery or a equivilant Odyssey battery with no problem.Yes, my new Supra needed a new battery installed prior to delivery. Presumably from people playing with the buttons and switches without actually running the engine. Can't just drop an Optima in there. I was told the batteries are coded to the vin and all. Crazy German engineering
Weāll see what happens.You're told that because your dealer had no idea what's going on. The code is there to specify the battery type and capacity so the ECU knows what charging profile to use on that specific battery. Nothing to do with the Vin. There are many people running smaller anti-gravity battery or a equivilant Odyssey battery with no problem.
Weāll see what happens.
In the BMW community, people have installed aftermarket batteries, but usually they get sucked dry in about a year. Donāt know if someone has figured out how to avoid this, but it seems itās too soon to sound the all clear.