FoxESS Community - Owners & Installers Forum

Thanks - the hand-wavy theory makes sense, as it needs to know the full / empty capacity to calibrate the SoC. I've done about 6 full cycles: Charge to 99%, watch battery input drop to 0KW, then discharge to empty when the 0.8KW emergency charging kicks in to top it back up. It still plays silly ...

FWIW, my experience after the upgrade: The SoC is more stable during use; however when the power draw from the battery sits at zero for > 1.5 hours, the SoC will adjust (dropped by ~10%). I also have the same behaviour as before when getting to full charge: SoC rises normally, then jumps by ~20% to ...

Thanks for the link. The WiFi stick route sounds like a good fall back plan. I got a response from my installer (who received a response from Fox), and they have upgraded the battery FW: I have checked the battery version is 1.0, which has the problem of SOC imbalance. I have upgraded the battery ...

Master : 1.30, Slave : 1.02, Manager : 1.50

If you find a way to get updated, please let me know

Looks like I was wrong.
Despite top balancing the packs, I still get a 20-25% drop when idle, and can only extract 7.1KWh from 99% to 10% cutoff (on a 10.4KWh pack).
Any suggestions for how to get a warranty claim started, or previous experiences?!

I've figured out my issue... I changed the Min SoC to 10% today and let everything discharge to cutoff. I've then checked the voltage on each HV2600 and can see that 2 are slightly higher than the others. Reconfiguring to 2xHV2600 rather than 4 and reconnecting to the inverter shows 30% SoC ...

Did you have any luck getting the SoC drop sorted after an update? I have mine setup to dynamically top up between 1230 and 0430, and during this time set the 'house load' to 0 if no top up is needed. I can repeatably watch the SoC drop by 20 - 25% each night during this idle period. It's a similar ...