More Start Up issues

[Malc]

Hi I have posted previously about a system I have at home. Today I am posting about a system I have had installed at my Village Hall. This consists of one 10.36kWh battery (ESS EP10) and inverter ESS AC coupled inverter)working alongside an existing 7.2kW solar system. The system started working in mid May and I have been observing its performance. We are not charging the battery from mains overnight, just using the solar power when available. What appears to be happening is that the battery will get upto 100% easily in the day and stay fully charged whilst the sun is shining, then from around 20:00hrs the battery starts feeding the hall's base load (undefloor heating) of around 0.75kW. By around 04:00hrs the battery is down to 20% min SOS. I've taken these figures from the Fox app so I could do with accessing more accurate data. At current ambient temps I thought I would be getting over 8kWhs out of the battery but htink I'm lossing 1.5kWhs somewhere. Any thoughts on how the battery should be performing, how I can get more accurate data and how can I improve things. Rgds

[Will]

Can you post some screenshots of your data that your basing your understanding from?

[Malc]

Screenshots from last three days as requested

. Hopefully you can see them. if you can't please advise how to add to message. Rgds

[Will]

What does it say under the detailed parameter area for your total daily use?