Unscheduled battery discharge

Last night my batteries - (8.2 & 9.5 kWh) decided to discharge at around 12:30. They continued to discharge at a rate of 2.6 kWh for around 7 hours - a total of 14.3 kWh. The settings for my system are Eco and a minimum on the battery of 10%. There are no automation's set and all other settings are as per the factory settings. Once the batteries reached zero they started acting normally - they did not start recharging via the grid so it was not as if they had decided to re-calibrate. I've checked the logs and there was no activity since the second battery was added in June. The batteries have now started recharging via solar power. The software version was 3012 when this happened. Given the flat state of the batteries I decided to upgrade to 3013. Thankfully the system did not decide to recharge the batteries via the grid otherwise I would have exported over 14 kWh at the cheapest time of the day and then imported 17.7 kWh when it was much more expensive. Has anyone else experienced this and does anyone know why it happened?

Vimar I've never had that happen to me, but the closest thing I had was when the Eon engineer put my CT clamps round the wrong way round and the inverter decided there was a load happening that it tried to meet by discharging the battery. Of course this would never succeed.

I'd look at the power logs in the portal to see what the inverters thought they were doing.

May point to a loose CT clamp connection, call your installer out if it happens again?

Sometimes worth resetting to defaults and restarting the inverter if it has a wobble

Thanks for that - I'll follow up with the installers after the Bank Holiday.