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Old 01-18-2019, 08:39 PM   #190 (permalink)
Snax
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Lord Vader - '15 BMW i3 REx
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Yes, shooting your battery is bad. LOL.

So this discussion of modularity is certainly interesting. I think it presents questions about the long term practicality from a maintenance and replacement standpoint when applied to a single platform. The i3 for example uses 8 individually replaceable modules with their own BMS to make up the larger pack. BMW does provision replacement modules for when one fails or under-performs.

This has me wondering about the long term practicality of that strategy however. I.e., as whole pack capacity declines, when one module goes bad, are the rest likely soon to follow?

Interestingly, unlike a lot of BMW stuff, prices for the individual modules are relatively reasonable. Entire packs however are significantly more painful for out of warranty replacement.
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