Xiaoxiang does not ask for password but Carplounge asked and I inserted 000000 and it worked. In short, I read another thread on this forum where it was recommended that I click "the device can be connected" or something similar on the top right of the app. I did so and can now read and edit all...
My xiaoxiang bms app will recognise the bms via Bluetooth but will never connect completely to show battery parameters. I have tried all versions of the app to no avail. I've tried carplounge bms and got same result. I then tried polinovel 2.0 app and just got basic battery status. Still no way...
Consider:
https://www.studer-innotec.com/en/products/variostring-series/
and
https://www.se.com/ww/en/product-range-presentation/62092-conext-mppt-80-600/