AC300 : solar in, AC out vs battery wear

Hi,

Does AC300 directly convert its PV DC input into AC without using the battery? I understand the excess is stored, but I want to make sure it’s not wasting energy and cycles by loading and discharing the battery at the same time.

I read the batteries of an AC200max would endure excessive levels of wear in case loads are connected on the AC outputs while PV in is active.

The bluetti app of my AC300 shows electricity entering the battery, then reaching AC loads.

I also noticed that the grid and ac out become green under some conditions (ups settings).

Thanks in advance for helping me understand!