Battery charging issue
I have 13 X 400w JA solar panels and a 16A Sunsynk hybrid automated inverter with 5.12 kw sunsynk battery fitted 6 months ago and still trying to make sense how the system preforms . Today my panels are producing 3.47 kw with 0.98kw going to battery and 1.96 kw feeding back to grid. SOC for battery at present 34% . Can anyone help with an answer to why is my system feeding 1.96 kw back to grid when my battery is only 34% charged. Battery temperature is 7°c. A cold sunny day here. Do I have an inverter issue or BMS issue? Or is the battery that inefficient in cold temperatures.
Any suggestions or advice would be much appreciated.
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Thanks for your reply. Yes in UK. Will get some insulation around battery during this cold weather as situated in garage. seen if I can get temp up.