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Im setting up a 12V solar system for my RV. I have 4 separate batteries with a BMS on each battery. Victron Multiplus II 12v 3000VA 120A Im asking if I can attach each battery separately to the Lynx Distributor, or do I have to wire all the batteries in series, basically making one big...

I have a 150amp JBD BMS on my DIY 4S 12v 302ah battery. The voltage on the battery terminals is 13.36v. Voltage from +battery to B- on BMS is 13.36v. Voltage from +battery to C- on BMS is 8.67v. I dont understand why this is happening. It wont allow current to flow out, or charge to go in...