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Old 01-13-2013, 09:24 PM
emh emh is offline
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Location: CA
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Mein Auto: 328i
Originally Posted by CALWATERBOY View Post
Interesting! How would the ECU know how to charge a battery of unknown construction and capacity?
Figuring out how to charge a battery of "unknown"* construction and capacity doesn't require black magic -- every manufacturer has been doing this for many decades now. And it's not like the IBS is significantly extending battery life over other cars. I'm guessing the complexity is in managing the various systems that run off the battery to minimize drain when the battery is nearing end of life. Even that is not unique to BMW.

Still, if a system wants to be intelligent about batteries of "unknown" construction and capacity, a feedback mechanism that monitors how the battery responds to whatever the system does, without requiring manual intervention, would be the right thing to do.

* They aren't really unknown construction and capacity, right -- as long as the manufacturer specifies what kind of battery to use, that narrows down the parameters greatly.
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