And just to clarify. I’m not trying to push back against any of your rationale or points already made. Just thinking out loud I suppose.
I didn’t think you interpreted negatively but I sometimes dwell on nonsense lmao
No not at all, maybe I should clarify my points here.
110% I agree that having cells balanced is key, no question about it. That said, this system has been installed for months and never had any "issues", and by that I mean it's worked all day every day. I'm only now aware of these issues due to the creation of this thread and the pursuit of an additional usable 10% of my battery bank capacity leading me to purchase the SOK cable, which then gave me the ability to use the same cable to connect to Solar Assistant when not being used for programming.
After connecting that, I noticed "things not making sense". We all make assumptions, I'm guilty of that. I assumed that the (3) batteries I initially had, all purchased within a relatively short period of time (I don't recall how far apart) would have had the same set points. I've not heard or seen anyone updating SOK firmware, nor have I seen a firmware update talked about on the Current Connected site. With that, I never even considered that they would have differing settings for voltage set points, regardless of firmware. Probably a bad assumption.
I also hadn't monitored cell level parameters because again, I assumed the BMS was doing its job.
I then assumed that the battery reporting to be at 95% had some form of an issue, I never imagined the BMS itself would report a different value locally.
As soon as I realized the value locally and on Solar Assistant wasn't the same, I then thought, well, ANY of the data could be inaccurate, cell voltages etc.
The facts I know to be true are this: They are all SOK 48v batteries from Current Connected, they are all in closed loop communication with the Sol-Ark 15k, I have not made any changes to the settings via SOKTools, they share a common bus bar and equal length battery cables. I would imagine they would balance pretty accurately over time.
I'd like to A) understand where the inaccuracies in reporting through Solar Assistant derive from (doesn't matter, just want to fix it), this way I can monitor data and believe what I'm seeing, which will help me diagnose future issues as I don't particularly want to climb up on my gun safe every time to check things, B) get the cells as balanced as possible (I assume a step in this process is to get all batteries to identical parameters and/or the same firmware) and once those two are accomplished I'd like to C) determine a way to get the BMS to listen to the value input in the "SOC Low Alarm %" field.
