Charging rate restricted above 90%

[brunofabre]

Prior to 10th March, the charging rate was generally close to 11kW (10kW from grid + 1kW from solar) all the way to around 98%.

Since then there seems to be a big charging rate drop from 90% and then again at 95%.

This means it will be harder to get to 100% during the 3 hours of free import.

I haven't had any firmware upgrades for quite a while. Anyone experiencing the same?

Anyone know why?

[MaterialBarracuda48]

Pictures 1 & 2 are the same, not sure if you was trying to show something different?

My battery FW was applied a while back, but the behavior seems to have changed, so I am thinking maybe Fox have changed some back-end value perhaps?


Inverter FW was updated 8th January.

It was changed since this date to the latest, but I do not have date.


Here is a picture of my system from 11th January, it is charge rate vs. SoC.
Key points are that it was running at full charge speed until 95% SoC, and then you see the charge rate drops off in stages. So it did not throttle back at 90%

Here is the system behavior from last night, the charge rate begins to drop off at 90% now.
You can see the charge rate before this stepping up as the battery temperature increases (still got cold UK nights)

[evilbunny]

Maybe Fox implemented better charge time estimations because lithium battery charge times are usually only given to 80%.

After 80% it takes nearly a similar amount of time as 20% to 80% as the charger tapers to squeeze in the last little bit.