What I have learnt about IP 65 5.1 kwh Sunsynk batteries:

1/ All the battery data is visible right down to cell level, state of the battery, number of cycles etc.

2/ You can get firmware updates done online, the same people who do the inverter firmware upgrades, can also upgrade the battery firmware on line.

3/ IF you go to the sunsynk app - equipment - battery you can see every detail about your battery, including the firmware version and everything else you need to know about the battery.

4/ If the the battery info is not displayed on the app under equipment, then you need to log into Sunsynk.net go to application centre, then customer support, open a chat and request they authorize to link the batteries to the plant. It should be done within a couple of minutes, if not you are in for a bit of head banging.

5/ I would suggest you get the installer to make sure the data is visible before they leave site, it should only take a couple of minutes if it doesn't load automatically.