AIO charge rate close to max despite low battery temperature

As of now, my AIO 13.5 is still charging at 5400W with and indicated battery temperature of only 9.2°C. This behavoiur appears contrary to what i have read here and elsewhere.

Previously, I had not paid much attention to battery temperature because it was always above any value that might mean I could not charge up to a sensible level. I am using HomeAssistant and predbat. My AIO has firmware level D0.612-A0.612 and BMS 10

Am I misunderstanding something about charge rate and battery temperature?

Mine is the same on 611. I dont think the temp limit applies to the AIO....yet at least! Maybe its something we will get as a surprise Christmas present

My AIO fell below 8C this evening so have just forced discharge to warm it up. Appeared to discharge at 6kW without issue.

I have 6 hour charging window on night tariff, I set charge rate to 2385W. That way, it charges for entire night, during the window, and then discharges for entire day or until flat. It helps with keeping temperatures up as long as possible.