hmmm battery calibration may not have worked … only discharged 13.9 today and I reckon 4.4 overnight during calibration so that’s a net 9.5 … hmmmm
And it only charged up 9.3kwh overnight so calibration certainly hasn’t improved things. With 5% holdback system should have 12.9kwh working capacity - it’s almost like 1 of the 4 batteries isn’t working?! Are your batteries working as expected?
Yeah mine are fine.
In your inverter panel, battery data, what is the BMS voltage?
Each battery cell is 3.3v and each battery unit has 24 cells. I have 6 units (20KWh) so a BMS voltage of ~472v.
I’m curious if yours is lower with 4 units or whether there is some battery magic that still delivers 472v to the inverter.
if my logic is correct then yours should be ~ 316v
317V showing
So I’m not being stupid, you would expect me to be charging c. 13kwh from 5%-100%?
And I guess you can charge c. 19kwh from 5%-100% ?
(it did drop as low as 290V on the full discharge whilst calibrating, which I would guess is to be expected)
Yes I would agree - 95% charge into a 13.6 KWh battery should consume ~13KWh (and deliver similar back the other way!). Maybe adjusted a little to account for losses.
If your BMS voltage is 317v then that at least suggests all 4 of your units are connected.
Not to want to rub salt in but if you had something call Home Assistant you get to see a whole lot more data than the GE portal gives you eg:-
Yeah I know about home assistant but trying to convince people this is becoming plug and play …really shouldn’t have to go through all of this stuff 
I got all excited to find my batteries at 50% having discharged 7.1kwh … sadly now at 5% (stop) and 9.7 kwh so the percentages not looking realistic!
I’m pleased to report now had two, back-to-back discharge/charge cycles at c. 13kwh 
so it was battery calibration as the problem?
dunno … why would that take 2 days to kick in 
GE Support said they were looking at it - so perhaps they found an errant setting - waiting to hear back on that … but looks hopeful
So we had 3 days of good discharge c. 13kwh then boom back down to under 10kwh. Yesterday was back to 11.2kwh.
Apparently GE support have been tweaking the voltage ranges - I guess allowing the voltage to go lower. (Voltage does creep down as the battery drains of course - a bit surprised to see it below 300V). At least they seem to have a handle on the issue - hopefully they can work it out and get us a stable full discharge!
Several poor days - voltage limits apparently … GE support are trying a ‘slow’ calibration overnight to see if that will fix it