Reset SOC charge stop after charging

Jorrit

The current Growatt WW charging schedule sets the SOC charge stop ( and the charge rate) to 100% after the WW charging session finishes.

This causes the battery to load to full 100% on a sunny day.

Today:

I myself like to stop my batteries to charge at 90% to prolong battery life.

Is it possible to set the charging stop SOC ( and eventually the charging rate) back to what is was before the charging session ?

Or if that is difficult to achieve (?) , to set it back to a values set in (advanced ?) settings.

I think many users do not want their batteries to be charged to full 100%

Know the point was raised in the ‘Growatt XH integration issues’ topic, but not sure if registered as such - sorry if I am repetitive.

Thanks to consider.

admin

Jorrit Yeah, it’s a tricky one to achieve with Growatt due to lack of good documented API and different ways of implementation for different Growatt inverters.

I think the suggestion about a max SOC target in Advanced might make sense, and allows the same level of control.

The charge rate is something we are looking at for the TL-XH inverters.

Jorrit

To share on some observations on charging behaviour of Growatt XH

9/10 times I see the following pattern ;

So the charging session reaches the target (30% today) early - it seems to me that Growatt is in practice charging at much higher kW than expected by set rate (in above graph, WW had set it to 44%) while seen from import kW it seems to be charging at about 75-80%.

But than something funny happens; towards the end of the session (5.00u) , battery has (apparently) dropped below target again because of consumption and it gets another charging boost , but this time full power or 100%.

Now, I do not mind so much, but I curious to why this may happen ? Do you reset the charge rate as soon as target is achieved ?(which would explain this) . Or only at end of session ?

Thinking about it, this may affect people who have set a lower charging battery rate - this later “top up” would seem to ignore any limit set.

I much enjoy the app now !