kosmik

You might still need a bit depending but even if you do drop it is minuscule. On 40A charge, I get 32% SOC on 2 hours but if a bad day, thats still short of hitting the 53V float level. Because of winter and bad sun, the two day tiers I have is 70% and the 100% so that I can still capitalize on the  sun but if its raining or badly cloudy, the time frame is short enough to still make it to float. Easy to reach the 70% from my nights usage ( Allowed 50% SOC ) and anything over the 70% odd gives the system time to float properly at full levels but the "100%" SOC is normally only around 52.4V odd so it needs a good few minutes to actually get the battery to the 53+ even at "100%".
 

100%.
So what I've done now is have a forced timeslot to ensure that batteries hit 100% or at least do some balancing. I'm not too happy with how its tracking though as even with that, looks like I'm losing 0.3v a day ( drifting I should say ). Right now am on loadshedding but my SOC is 64% with a voltage of 48.09. Thats considering Monday it was at 100% for 40mins and yesterday for around 20mins ( 53.77V )
But lets see after a week, bad rain and cloud so a bit annoying and I have LS today during my topup time but that should be fine, will balance out tomorrow again, in theory so will see what happens then.
 

100%.
So what I've done now is have a forced timeslot to ensure that batteries hit 100% or at least do some balancing. I'm not too happy with how its tracking though as even with that, looks like I'm losing 0.3v a day ( drifting I should say ). Right now am on loadshedding but my SOC is 64% with a voltage of 48.09. Thats considering Monday it was at 100% for 40mins and yesterday for around 20mins ( 53.77V )
But lets see after a week, bad rain and cloud so a bit annoying and I have LS today during my topup time but that should be fine, will balance out tomorrow again, in theory so will see what happens then.
 

Then I suggest monitoring individual cell voltages when that happens (with either PBMS tools, or this one: https://github.com/Tertiush/bmspace or solar assistant). I think it's likely a cell that is triggering an undervolt disconnect, but with the tools you should be able to see what the issue is. Actually, with PBMStools, you should just be able to look at the log and see what caused the previous disconnect.