Charging/ Grid not following settings

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Pwoody
Posts: 3
Joined: Fri Dec 27, 2024 1:39 pm

hi,

recently installed and had a look at the app and the cloud site... im concerned ive confused it as the charging of the battery seems to be sporadic and wont use the battery even though its at 60% adn shows setup for SelfUse with min SOC at 10% and Battery Reserve at 15%.

Battery is showing temperature at 2.4c, so it may be that, but its not using any charge at all and im drawing from the grid.

is there a way to reset all the settings back to standard?
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Dave Foster
Posts: 1786
Joined: Thu Oct 13, 2022 7:21 pm

Pwoody wrote: Thu Jan 02, 2025 8:42 pm hi,

recently installed and had a look at the app and the cloud site... im concerned ive confused it as the charging of the battery seems to be sporadic and wont use the battery even though its at 60% adn shows setup for SelfUse with min SOC at 10% and Battery Reserve at 15%.

Battery is showing temperature at 2.4c, so it may be that, but its not using any charge at all and im drawing from the grid.

is there a way to reset all the settings back to standard?
I think it very unlikely you have messed up any settings on the website (unless you have installer access to the system)

So lets just run through a few things to check -
  • Firstly set a charge period when you need to charge but if you are not using the charge periods you must set any used periods to 00:00-00:00 or they can block the battery discharging.
  • MinSoc and Battery Reserve are usually set at the same level (10%) unless you have gone to the trouble of installing EPS
  • Work mode should normally be in Self-Use
  • Are you using the scheduler at all, if you are can you post a picture of the app settings for the schedules ?
  • Your battery temperature at 2.4C is getting very close to the minimum and it is possible that some of the cells may be below this which would account for the system not using the battery, low temperature usually affects charge first (from 20C down to 0C at which point it will no longer charge) - the discharge rate will be throttled as it approaches 0C but it does usually continue to provide limited power even at that temperature.
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Pwoody
Posts: 3
Joined: Fri Dec 27, 2024 1:39 pm

I appreciate your reply...
  • Firstly set a charge period when you need to charge but if you are not using the charge periods you must set any used periods to 00:00-00:00 or they can block the battery discharging. i had one enabled and set at 00:00 - 07:00 and the other set at 00:00-00:00 and disabled
    MinSoc and Battery Reserve are usually set at the same level (10%) unless you have gone to the trouble of installing EPS - have amended this.
    Work mode should normally be in Self-Use - it was, but seems to refuse to use the battery at all
    Are you using the scheduler at all, if you are can you post a picture of the app settings for the schedules ? - no schedules setup
    Your battery temperature at 2.4C is getting very close to the minimum and it is possible that some of the cells may be below this which would account for the system not using the battery, low temperature usually affects charge first (from 20C down to 0C at which point it will no longer charge) - the discharge rate will be throttled as it approaches 0C but it does usually continue to provide limited power even at that temperature.
Even this morning it was drawing from the grid after 7am, despite the battery being at over 50%, after it didnt charge last night. its charging now with surplus from the solar but no idea if i'll be able to use the battery!
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Dave Foster
Posts: 1786
Joined: Thu Oct 13, 2022 7:21 pm

Pwoody wrote: Fri Jan 03, 2025 10:21 am I appreciate your reply...
  • Firstly set a charge period when you need to charge but if you are not using the charge periods you must set any used periods to 00:00-00:00 or they can block the battery discharging. i had one enabled and set at 00:00 - 07:00 and the other set at 00:00-00:00 and disabled
    MinSoc and Battery Reserve are usually set at the same level (10%) unless you have gone to the trouble of installing EPS - have amended this.
    Work mode should normally be in Self-Use - it was, but seems to refuse to use the battery at all
    Are you using the scheduler at all, if you are can you post a picture of the app settings for the schedules ? - no schedules setup
    Your battery temperature at 2.4C is getting very close to the minimum and it is possible that some of the cells may be below this which would account for the system not using the battery, low temperature usually affects charge first (from 20C down to 0C at which point it will no longer charge) - the discharge rate will be throttled as it approaches 0C but it does usually continue to provide limited power even at that temperature.
Even this morning it was drawing from the grid after 7am, despite the battery being at over 50%, after it didnt charge last night. its charging now with surplus from the solar but no idea if i'll be able to use the battery!
Are you able to access the front panel of the inverter - can you check the time displayed there is correct

If the time is correct I would recommend a shut-down, restart of the inverter and batteries - if you haven't done that before there is a useful video here viewtopic.php?t=5

But basically you need to isolate the PV (dc solar), then isolate the AC to the inverter, power off the batteries, then open the dc isolator on the batteries - wait for the inverter screen to go blank.

Then reverse the process, so that is battery dc isolator close, power on batteries, inverter ac isolator close and pv (dc solar) isolator close.

The inverter will go through checks and after a minute will come back on-line. Wait a further 5 minutes and see if the inverter is now powering the loads from the battery ~ note you may have to wait for a larger load than the solar being generated before you can tell.
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Pwoody
Posts: 3
Joined: Fri Dec 27, 2024 1:39 pm

thank you, will check later this afternoon
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Harpernr3
Posts: 1
Joined: Sat Jan 04, 2025 7:51 pm

How did you get on? Mine is doing exactly the same and settings are the same. It was set 00:00-00:00 but charging to 60% 2 days in a row when set not to. Then tonight we're powering from the grid completely and the battery is just sitting there on 60%.
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terrykhutson@outlook.com
Posts: 1
Joined: Sat Jan 11, 2025 1:19 pm

Hi, having exact same problem in last 2 days. No settings have been changed since install in November. Did you get this resolved?
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Dave Foster
Posts: 1786
Joined: Thu Oct 13, 2022 7:21 pm

terrykhutson@outlook.com wrote: Sat Jan 11, 2025 1:22 pm Hi, having exact same problem in last 2 days. No settings have been changed since install in November. Did you get this resolved?
If it is charging at low power, it is very likely low temperature and your BMS will be slow charging the batteries in an attempt to keep them operational - you can see the battery temperature in the V2 app if you click on Devices, Battery - this is the lowest battery cell temp. Below 10C will result in throttling of charge and as it drops below 5C you will likely see these affects as at 0C the batteries will no longer accept charge (until they warm up again).
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reef
Posts: 130
Joined: Sat Sep 09, 2023 10:06 am
Location: East Yorkshire

As mentioned above, I would be looking at the battery temperature. Unusual charging from the grid, the battery suddenly not being used etc all sound like it's too cold. What temperature is it showing in the v2.0 app?

These issues nearly always pop up for people during very cold spells.

Edit: Dave beat me to it. :D
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