The big one is a Mosfet, here’s what you need to check. Be careful not to do any shorts in the process as you can easily destroy the bms by making a short by mistake, when taking measurements. Remember it’s a powered circuit you are working on!
Yes, I could do that (I think I already pointed out in one of my previous posting on this forum), but from your description, yours is most likely locked. Also, pack you're having is using LG MH1 cells which are crap, especially after a few years. I would never use LG in any of my builds and if you plan on replacing the cells, I suggest not using LG (MH1, MJ1, MG1). A better replacement would be Samsung 35E and you'll get 504Wh instead of 460Wh. Molicel M35A is also a very good cell but more expensive than Samsung.
Perfect! Thanks for the answers! Gonna order some good cells for this puppy! And probably send the BMS to you! Can I test first if the BMS starts working again once hooked up to new cells? Or do you say don't bother it will not work?
You can try it, of course. Just bridge those 2 points before removing the BMS from the pack. And remove the bridge once it's installed (all connections to the pack).
well that is too late now, I already removed all the bms wires without bridging it...
That was actually my question...
