openinverter forum

Just emailed them over Tom, thanks.

I am looking into this again and realised I only have a 24s BMB.

The weird part is that the 23s BMBs are reporting wrong amounts of cells where the 25s BMBs are fine.

If anyone has a spare 23s BMB I would be happy to do bench validation in exchange for it.

Does anyone have any experience with a 2024 Highland battery?
Cannot get HVIL loop satisfied, to close the contactor.
From researching schematics online it seems the new 2024 battery HVIL system have changed.

i dont have a Highland battery right now, if i find one, i can check this out if something was changed. In my project i use 4 Model 3/Y Batteries and one Plaid battery for solar storage at home. But i dont see a highland battery for a good price on the market.

tom91 wrote: ↑Thu Jan 30, 2025 1:39 pm The weird part is that the 23s BMBs are reporting wrong amounts of cells where the 25s BMBs are fine.

I think I know why things are going wrong with 23s modules. With the 23s modules there is a gap with an invalid value between cell 13 and 14 when reading out the data

muehlpower wrote: ↑Wed Apr 16, 2025 7:15 pm I think I know why things are going wrong with 23s modules. With the 23s modules there is a gap with an invalid value between cell 13 and 14 when reading out the data

Not quite, its cell 8 is skipped. I have this sorted and someone is testing these fixes. But I think there are issues with their comms between modules.

Will probally push an update to github soon.

https://github.com/damienmaguire/Tesla-M3-Bms-Software

Update for 23s modules is now online.