Tested the panels with my EB150 this morning about 1 1/2 hours before solar noon, conditions were a little hazier than yesterday but not bad. Air temp about the same in the low 70’s.
First test was a single panel just out of the garage to see what the output was before it heated up.
Renogy 1 - 172 watts, temperature of the glass face was 78 degrees.
Renogy 2 - 168 watts, same temp.
Bluetti 1 - 161 watts, same temp.
Bluetti 2 - 162 watts, same temp.
Bluetti 3 - 158 watts, same temp.
Looks like the Renogy outperforms the Bluetti by about 10 watts per panel when the glass temps are the same.
Second test was a single panel about a 1/2 hour later after the panel temps had stabilized (checked the temps an hour later and they hadn’t changed much).
Renogy - 154 watts with a face temp of 115 degrees.
Bluetti - 140 watts with a face temp of 147 degrees.
The Renogy lost 16 watts to heating and the Bluetti about 20 watts, so the black fabric of the Bluetti probably isn’t a big contributor to performance difference but it can add up with multiple panels.
I also checked with 2 panels in series shortly after the second test and the Renogy’s produced 310 watts while the Bluetti’s pulled 285 watts which is in line with the single panel results.
Combined with with my EB55 single panel tests above it appears that the fixed panel Renogy’s will out perform the portable Bluetti’s by 14 to 19 watts at my location, on this day and at these temps, YMMV
It was starting to get overcast when I tried 2 panels in series on my AC200P but the results were similar although its hard to get a good reading on mine since the watts display jumps around constantly, often by 20 watts. My best guess averaging was the Renogy’s did 278 watts and the Bluetti’s 260 watts.