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BMW i3 battery upgrade (60-120AH)

13074 Views 7 Replies 5 Participants Last post by  MarkDoronin
Hi all,
Did a battery upgrade on a BMW i3 REX, it went from 60AH to 120AH (42.2kWh). I still have to do some coding to get it out of power restricted mode, but really nice to see that these upgrades are possible, and almost plug'n'play!


I'll make a longer video with more details once I get the coding done!
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To follow up on this topic, I made a video which explains all the pitfalls of the 120Ah upgrade. Thanks again to Havrla!

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Excellent presentation, thank you for pointing out the difficulties to be aware.
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Excellent presentation, thank you for pointing out the difficulties to be aware.
Thanks! Glad you liked it, I hope this will inspire more shops/competent DIYers to try this upgrade, and find better solutions for the tricky parts!
Thanks! Glad you liked it, I hope this will inspire more shops/competent DIYers to try this upgrade, and find better solutions for the tricky parts!
Dala, is there a company or shop in California that is able to do the i3 120 battery upgrade?
Dala, is there a company or shop in California that is able to do the i3 120 battery upgrade?
None that I'm aware of!
Hi all,
Did a battery upgrade on a BMW i3 REX, it went from 60AH to 120AH (42.2kWh). I still have to do some coding to get it out of power restricted mode, but really nice to see that these upgrades are possible, and almost plug'n'play!


I'll make a longer video with more details once I get the coding done!
Thanks a lot @Dala for doing and sharing those video.
Many are those who wish to make such a modification on their bmw i3 in the more or less long term.
Many people are also interested in the prototype made by LION Smart.
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great video and modification. I think for many it can be an impetus on the way to improving their car.
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