batteries discharging overnight, won't reach bulk voltage? help!?
Hi, we have new install of approx 2000w solar, put in 300ah lithium batts with manufacturer settings for bulk, absorb, float etc. 58.4, 1\2 hr, 54.8, Outback pre-wired 48v pack. First charge went to 55v ish & stayed there,it started at 1500w then dropped to 50w for hours, prob at least 3. Soc says 100% though it is not. As soon as the charger snoozed the voltage began dropping. It got to 53.4 & I turned the whole lot off. This took maybe two hours?, We have a BMS. There was no load at all, although mate showing -10 - 30 w. I was trying to do the first full charge, discharge cycle thing 5 times like the manufacturer advised for new lithiums. It would seem we have multiple issues. Please help?! Thought I will test the v in the morning to check its a true reading. Surely we should not be losing so much v when the inverter is not even on! I am lost. Please tell me if you need more info, I'm a definate beginner who needs to learn.
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