During forced charge I have previously been able to charge at 11kW. Maximun of 10kW from grid and the rest from PV. Today it is only charging at 8.5kW.
Anyone have any clues wny?
Yesterday it was working as expected.
However today the charging is being capped at just below 8.5kW.
If nothing had changed (firmware, inverter settings), my first thought would usually go to battery temperature - as it falls past 21C they will start to derate approx 5A at each 5C incremental step, but as they charge they will warm and you would normally expect to see them start to recover again after an hour but I can't see that on your trace.
If not temperature it's the usual candidates to check in your inverter settings, ImportLimitPwr and ImportLimitCur (under on-grid, Export Control), and also under Battery there is MaxChargeCur which you would normally expect to be set at 40 or 50A depending on the inverter.
If not temperature it's the usual candidates to check in your inverter settings, ImportLimitPwr and ImportLimitCur (under on-grid, Export Control), and also under Battery there is MaxChargeCur which you would normally expect to be set at 40 or 50A depending on the inverter.
I have checked all of my settings and nothing has changed from the previous day. Does the battery provide a reading of it's temperature? The outside temperature seemed similar to the previous day so not sure that would explain it either. There now seems to be a set power limit based on the SOC.
At 11am when the forced charged period started the SOC was at 32% and the charging power was being throttled at around 8.43kW. At 11:52 the SOC reached 52% and the charging power stepped up to 11kW. At 12:52 the SOC reached 80% and the charging power was throttled at 6.38kW. At 13:32 the SOC reached 90% and the charging power was throttled at 4.25kW.
I've colded days previously and have not seen this throttling before. I'll check again today to see if this is now the way the battery charges.
At 11am when the forced charged period started the SOC was at 32% and the charging power was being throttled at around 8.43kW. At 11:52 the SOC reached 52% and the charging power stepped up to 11kW. At 12:52 the SOC reached 80% and the charging power was throttled at 6.38kW. At 13:32 the SOC reached 90% and the charging power was throttled at 4.25kW.
Thanks for the hint.MaterialBarracuda48 wrote: ↑Sun Apr 19, 2026 11:00 pm Look for your filter, and then find your battery cell temp min
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At 11am the battery temperature was 21.3C and steadily increased during the charging period so according the post from @Dave Foster would not expect any throttling of the charing rate during that time.