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Well I think the BMS is toast on that battery. Everything was trending positively when I went to bed last night, but when I woke up, it was stuck at 53.9v and had kicked back into OVP.

Update again: With the closed loop system completely disconnected, the BMS status is now 'DSG'. I'm assuming that means discharging. The inverter has stopped using grid power, and is actively draining the battery at about 2.2kW

Update: with the comms cable attached it's registering OV (overvolt) as 'Yes', but its status isn't OVP anymore status is now 'idle'

BMS Statuses: Pack 1: Full Pack 2: OVP Pack 3: Full Pack 4: Full Pack 5: Full I've turned off all batteries except #2. Disconnected all communication cables. Float/Absorption/Equalization voltages are all set to 57.6v, and the battery is currently reading at 53.2v on the inverter. If I plug...

Oh should I just 'take all batteries out of the system's by turning them off and disconnecting the BMS comms cable? And make the shitty battery 1 of 1 battery known to the inverter?

I'm trying to convert this to my lamenst terms....just disconnect BMS and watch?

Should I worry about the cells between 3.4-3.5v in the other batteries if the PackV is acceptable?

I will try this and report back

Ok I've been monitoring and allowing the cells to balance since my last post. Here are the numbers: 11 Feb 2023 #1 PackV: 56.09v #2 PackV: 53.91v #3 PackV: 56.09v #4 PackV: 56.12v #5 PackV: 56.11v Pack 1 Cells: 1: 3507 2: 3508 3: 3506 4: 3508 5: 3505 6: 3509 7: 3508 8: 3508 9: 3508 10: 3508...

Ok so after about 20 hours off the batteries being allowed to charge to 100% and actually balance themselves, here are the Pack Voltages: Batt #1: 55.83v Batt #2: 53.62v Batt #3: 55.80v Batt #4: 55.84v Batt #5: 53.65v Are the batteries toast? Especially #2 and #5?

Ok. I've attached 3 photos. I'll go thru each of them by title for clarity: Limiter Param - Limiter - this is where I've defined that I want the batteries to charge all the way to 100% Batt Setup - Charge - Start % is now set to '0' so it won't attempt to begin recharging until the batteries...

I should add that our battery serve more of a purpose than just backup power. We've installed our system in a fully electric tiny house, so the batteries are used daily atleast in some capacity. We're hooked up to 50A service, so if for example we fire up the hot-water-on-demand, we easily...

Do you allow them to regularly charge to 100% by PV, assuming there's enough sun?

Ok...10% - 100% and 54.4v float it is. Any other parameters you fellas suggest? Ie. At what percentage should I allow the batteries to drain to before the inverter begins charging again.

Awesome will do. I'm out of town, so it won't be until late this evening, or early tomorrow morning before I can post it. But thank you!

No warning or alarms on the batteries...battery #6 was showing an alarm, but it's been out of the equation for about 6 months while it's being serviced. After changing the float to 54.4, and charge to 100%, and record the individual cell voltages for each battery, what should I do with that...

The batteries are connected in a 'closed loop' with the Inverter/Charger; all the battery BMS's can communicate with one another, and to the SolArk. I set the 90% value in the SolArk.

Hey everyone! I was hoping I may be able to share the problem I'm experiencing with you folks, and see if you experts have any insight. For reference, here is my current setup: - SolArk 15k Inverter/Charger - 5x SOK 48v 100Ah batteries - grid tied - no solar (yet) Basically I live in an area...