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well i just finished my i8 hv battery upgrade project after crawling under my car for 2,5 day.....
I will never ever do this again without using a decent lift but it works in the end - i now have a 2015 i8 with modified 34 Ah cell packs from a 2022 SP41 battery pack from a damaged BMW 745e.
I'ts not a simple swap, this involves making 6 new T- wiring looms because the newer battery packs use only one CSC and only 3 NTC's per cell pack instead of 2 CSC's and 6 NTC's.
the dimensions of the packs are the same, the new packs arer around 0,9 kg heavier because of their higher energy density.....
I reset some self-learning adaptation values and will have to see on a longer term how this translates in a higher mileage but al least the packs are 6,5 years younger so that's already worth the money without a doubt....
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