....while the solar panels are putting out good power? Or should I use a seperate port BMS so that only the load is cut off?
asked
Is it true that if I use a common port BMS it can damage my BlueSolar MPPT if it cuts off the LiFePo4 batteries due to low voltage?
You should always switch each device with a separate contact. Devices' inputs may be at different reference levels or open circuit Voltage levels.
If your BMS has only one output the use it to drive a relay with two separate contacts so that the contacts being used to enable /disable each device will be isolated.
You could also use a single output BMS to drive two opto-isolators if you would rather use those instead of a relay.
Thanks WKirby - I have ordered a seperate port BMS that doesnt switch off the charging current, Ill let you know how I get on.
