Hello @BLUETTI_CARE,
I attached photos of things I observed recently. Here are the comments :
- abnormal battery depletion with system totally OFF: batteries charged 100% >> turning the system OFF >> turning back ON 2 hours later = batteries charged only 75% when back ON
- abnormal battery depletion with no AC/DC load: w/ no AC or DC consumption at all I see charge level drops by 12% in 7 hours
- strange & sudden battery charge level drops: with light AC consumption over time with normal charge level decrease, I start to see sudden drops of battery charge, from 36% down to 9%, triggering grid charge.
My AC300 system and B300 batteries are just 1 year or so old, that is less than 1000 charge/discharge cycles … if the batteries are beginning to wear out then we’re very far from the pretended lifetime of LiFePO4 batteries “10 years and several thousands cycles”…
Any explanation ?
Also, one strange thing I observed in the past months and was not the case before : I have 2 B300 batteries; and the two do not deplete in parallel as it was before ; seems that one is depleting till very low, and then the other one takes the relay.
This by the way is OK and preferred to both depleting in parallel. The only thing is that I would like to control balances, that is making sure that it’s not always the same battery that depletes and charge in priority or it’s going to wear it out much faster than the other…
Any investigation you could do remotely on my system? or any known bug requiring FW update ?
My info:
AC300 s/n AC3002309000181363
IoT=v9041.10,
ARM=v4037.07,
DSP=v4053.30,
BMS=v1021.14 = same for the 2 batteries.
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