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Thank you all for your comments and input. This is not on a rooftop, but my patio which faces due south. It is built to be portable as it gets no meaningful sunlight 6 months a year due to the surrounding stuctures and foliage. I will move it come early October. and secure it to my patio wall...

No. you need at least one B300. BTW, prices have come down recently.

Front view

Is it safe to directly charge a 24v LiFePO4 Battery from the 24v cigarette outlet on a Bluetti AC300? The manual says it is rated for 10amps at 24v.. Please LMK.

I want to instal 7 Newpowa 220W Monocrystalline 10BB Cell Solar Panels in series. The challenge I have is there can be NO roof penetrations. I can only mount the rackinging into the top of the South ledge and the side of the North ledge. Any ideas hoe I could do this with unistrut?

Yes, the white area is flat. But the plan was to mount it on the ledges. the North ledge is 4' off the ground and the South ledge is 2' off the ground.

I am fairly certain it is not concreate since the building in a midrize wood frame. The red X's is where I wan to mount. I just am not sure hoe. i am new to all this.