Forced Charge then revert to Self-Use when SOC=100%

mikeincairns · Sun Feb 15, 2026 1:46 am

Force Charge setting disables solar when battery reaches 100%.

This is something that has frustrated me since I installed then unit. The latest FoxCloud2.0 App is significantly more intuitive, and is much simpler to setup. But it does not work the way I want.

I want to Force Charge in the daytime when the input rate in very low. Where I live, the only cheap electricity is 11:00-16:00. Another reason to do this is to supplement a small (probably inadequate) 6kW of panels.

Here is my problem - during the Force Charge, when SOC reaches 100% it essentially switches off the panels, and powers the load from the battery. I would prefer that the system falls back to Self-Use after the battery is full, so that it power the load from solar if available.

Example:
Forced charge is configured 11:00-16:00
11:00 - Forced charge starts. It is a sunny day. Battery is at 50%. Panels are producing 6kw. Solar goes mostly to Load. Grid goes mostly to Battery.
13:00 - It is still very sunny. Battery is at 100%. Panels are producing 0kw. Solar stops. Grid stops. Battery powers the load.
16:00 - Forced charge stops. It is still sunny. Battery is at 90%. Back to Self-Use. Solar powers the load.
Result - 13:00-16:00 I have lost 3 hours of solar production

MaterialBarracuda48 · Sun Feb 15, 2026 10:42 am

Is your system part of a VPP (3rd party controls like Amber) that is in control of your system?
Are all of your settings correct on the Inverter menus for Import/Export and Battery?
How are your FW versions compared to the latest?

If you are really struggling, can you invest in and setup Home Assistant so that you can program the exact behavior you want via automation.

mikeincairns · Sun Feb 15, 2026 10:43 am

MaterialBarracuda48 wrote: ↑Sun Feb 15, 2026 10:42 am Is your system part of a VPP (3rd party controls like Amber) that is in control of your system?
Are all of your settings correct on the Inverter menus for Import/Export and Battery?
How are your FW versions compared to the latest?

If you are really struggling, can you invest in and setup Home Assistant so that you can program the exact behavior you want via automation.

Nope. Nothing like that.

MaterialBarracuda48 · Sun Feb 15, 2026 10:55 am

So no VPP, the Inverter settings all seem correct, and your FW versions are I guess current.

A reboot is only thing I could suggest, and checking the CT Clamp is enabled and behaving correctly.

Last thing would be to stop using the FoxCloud2.0 App for a full 24hrs (do not open at all) and use the website to remove the scheduled charge and input it again from scratch.

MaterialBarracuda48 · Sun Feb 15, 2026 11:03 am

I have just got to read that you posted this in another thread.

Do you know how to find your FW versions from the App?
If yes, can you compare and confirm you are current viewtopic.php?p=8069#p8069

bex · Wed Apr 08, 2026 12:00 am

I have this issue. Especially for winter, I need to charge the battery because solar doesn't fill it up. However, once filled, i would like it to go back to using solar self use.

What it actually does on forced charge: Fill battery, clip PV generation and use grid.

What i would like: use pv for home load, remainder of pv charge and draw from grid to charge during to time of use.

Master is 1.39
Manager is 1.24
App says up to date

8kW panels
H3 smart 10kW
32kwh batt

eggy · Mon Apr 13, 2026 12:57 pm

Same issue here with a KH 10kW. I’m hoping to get around it with homesssistant, but it would still be nice if it fell back to self use instead of just forcing maximum grid usage.

famacedo · Tue Apr 14, 2026 4:03 am

Same issue here. I even moved to a provider that offers 3hrs free charge. The idea was to use the 3hrs to give a boost to my battery, but two problems.
1) For the first 30min or so the charge rate is initially 9.79kwh (like 5kwh from solar + 4.79kwh from grid. I have a 9.9 inverter). However after that, the charge rate drops to around 6.30kwh (usually getting 5kwh from solar + another 1.3kwh from grid). I am losing 1/3 of my charge rate. Has anyone noticed this drop in charge rate?
2) Same as the others, once it reaches 100% and I still have time left on my Force Charge mode, it shutdown the PV and uses the grid to feed the house. it should be back to Self-use and use the solar.

basically, I need to every down keep switching back and forth manually which defeats the purpose of have a schedule.

Fox Team, any suggestion/solution?

Thanks,
Flavio

eggy · Tue Apr 14, 2026 8:52 am

Flavio, is your system overheating? Is it in direct sun? It will probably reduce in power significantly if it gets or stays hot.

Not exactly sure if the app shows temperature, but if the aluminium heat sink on the inverter is hot enough that you can’t touch it, that might be your problem.

famacedo · Wed Apr 15, 2026 2:13 am

eggy wrote: ↑Tue Apr 14, 2026 8:52 am Flavio, is your system overheating? Is it in direct sun? It will probably reduce in power significantly if it gets or stays hot.

Not exactly sure if the app shows temperature, but if the aluminium heat sink on the inverter is hot enough that you can’t touch it, that might be your problem.

Hi,
the system is actually undercover and well protected from the sun/rain with plenty of good airflow. Having said that, I will monitor the temperature from now on to see if that might be some internal temp raise issue. I am running the Force Charge as we speak. So far so good (but only started 5min ago)

Thanks for the feedback, will update later

famacedo · Wed Apr 15, 2026 5:19 am

Few UPDATES:
1) so today I monitor my "Forced Charge" configuration. It worked perfectly and as expected. There was no drop of charging rate. The only time the rate dropped from 4.8 to 1.6 ("Charging From Grid") was when it hit exactly the 90% mark. From this point on, battery was basically getting charged mainly from the solar panels all the way up to the 100%.
2) regarding the behaviour when set to "Forced Charge" and the battery hits the 100% (and still under the Force Charge window ie 11:00 to 2pm). Well, it also worked as expected. As soon it hit the 100%, the energy from solar panels was getting distributed btw the house and exported to the grid.
It seems that the system didn't officially switch back to Self-Use mode (perse), but it started to behave like it when hit 100%.
The only "problem" is that at 2pm I was expecting the mode to show "Self_Use" at the main screen. However still showing "Forced Charge". However, again it was behaving like Self_Use. I turned one AC and few appliances and the battery start discharging. it took about 15min to finally display "Self_Use. I can live with that.

I think the system is working for me as expected. Happy, Happy!!!

MaterialBarracuda48 · Wed Apr 15, 2026 9:48 am

famacedo wrote: ↑Wed Apr 15, 2026 5:19 am The only "problem" is that at 2pm I was expecting the mode to show "Self_Use" at the main screen. However still showing "Forced Charge". However, again it was behaving like Self_Use. I turned one AC and few appliances and the battery start discharging. it took about 15min to finally display "Self_Use. I can live with that.

If you pull the screen down to do a refresh, then it would have likely changed. I have seen it 'stick' on the last work mode, and a screen refresh wakes it up.

Try that tomorrow at the same time to test, it also helps I have the 5 second local refresh rate perhaps, do you have that?