Hi,
I am reaching out to you or you community for a catamaran sailing on the pacific. The crew reports a problem with their batteries. This is what the captain wrote to me (they can communicate with me by InReach):
"We have lifepo4 batteries 12v 1000Ah, 20 cells with 8xbms, 2x victron mppt solars, victron cerbo and smartshunt, victron multiplus 3000, bcu ppak+4c battery control unit. All has worked fine since 2021. Now the batteries are not taking charge. They quickly get to max voltage (14.2), and discharge quickly at night, so the boat goes dark. I can restore power by resetting the battery controller and running the engine or generator. I first saw the problem 3 days ago and it is quickly getting worse. No errors reported by system, all 8 bms lights are green. Connections look good and nothing is getting hot. I tried setting different soc % levels manually and it makes no difference. We need to know what it may be and what can we do to keep the lights on."
I would be grateful for any help.
Thank you!