Okay thank you, so I will post a topic about my BMS, I think it can be interesting for a lot of DIY guys, and I work on it to have the price as low as possible, but with high precision and reliability. As I said, I think I will give the protocol to directly communicate with the element's BMS bus, with a simple RS232 interface (will give the schematic too), to add monitoring everywhere there is a free RS232 port.
Regards
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