240w solar panels

Dear brain trusts,

I have purchased 4x panels 240w to charge my AC300 + 2x B300 setup.

I have tested them individually and also linked two panels in series and parallel . Regardless of which set up I’m only getting 30-50W of power input per panels.


(Single 240w panel)

(Parallel connection of two 240w panels linked in series, total of 4 panels)

I’m totally new to this backup battery business and have no electrical background at all. Would appreciate any feedbacks. What am I missing?