Solar panel production figures

Awful depends on the size of the system and what it's expected to generate this time of year.

Yesterday was a rather grey and overcast day, this morning is rather misty with thick cloud forecast all day.

SolarEdge: 0.7 kWh
Garage: 1.04 kWh
North west roof: 0.94 kWh
House rear wall: 0.16 kWh
Peak power was 0.97 kW at 12:36

Total generated yesterday: 2.84 kWh
Total exported yesterday: 8.5 kWh
Total imported yesterday: 31.062kWh
 
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Ron-ski said:
@Oldman2 Thats the problem with looking at individual battery SOC, it lies, it makes it up and its not accurate, which is why I love my Victron Lynx shunt, that's my point of truth.

The two BMS's can be wildly different from each other and the shunt, sometimes they are in sync, most times they are not and these days I have no idea unless I look on the app, as both BMS screens have stopped working, but its a common thing that BMS's don't calculate SOC charge very well.

Currently they are 81% and 84% whilst the Victron system reports 86%, so pretty close. Ones at 53.2v and the other 53.07v.

The biggest problem is they don't measure low levels of current very well, so the SOC charge will drift, and often they don't have a very good way of resetting to 100% either, so they never reset.

If all your individual batteries are very close on voltage, and the current they are drawing is very close then they are probably all about the same SOC.
Click to expand...
Well I Flipped the trips on the 2 batteries with the highest SOC and force charged the other 2 until they were at the same SOC as the 2 isolated ones, then let them all charge together to 100%. They have since discharged to 48% and recharged to 100% within 1-2 % of each other again so that will do me. Its going below 20% that really messes with the individual cell voltages on mine.
I did a full BMS check on all 4 batteries yesterday and the battery cycle count was 225, 217, 218 & 221 The first 3 batteries are newest and have always run together so how the first gets 7-8 more cycles on it I don't know. The last reading is from a battery that's at least 6 months older and has not always been run with the others so its a red herring number wise.
At full charge they all had between 1-4mV cell difference :)

Sorry for the thread drift, my generation yesterday was a mighty 0.875kWh....
 
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