Today is a sunny day at around 32C (90F). This means the solar panels I’m using are in full sun and considerably hotter. (I dont, have a thermometer out there but past experience tells me probaly arounf 50C in the sun. (122F).
Panels used = 2 x 160W Dune folding solar panels, connected in Series to the Elite 100 v2.
There is not enough space available behind my shed to move the panels, therefore the approx test time and duration will centre the panels midway through sun movement.
These panels use Anderson plug connectors and and include a 5M (15’) extension lead. Then through a small series connected doubler Anderson cable, a short Anderson to MC4 cable and finally to the Elite 100’s MC4 to XT60.
The Elite 100 was depleted to a SOC of 20% and the display shows around 234W of input out of the 320W rated at the begining of this test. The primary reason for the test was to see how long it takes in the real world to charge. The E100 display noted 3.7 hours to recharge (3 hours and 42 minutes).
After 30 minutes the displayed input has increased to 250W = 78% of rated. However, I expect to see some derating due to the higher ambient temperature. (BTW - Google AI suggest 32C shade temps would be around 47C in the sun)
I’ll update this post when the test completes and I expect the results to prove that Lab tested solar outputs will be lower in the real worls and rated charge times will longer, lol. 
After 1 hour Elite 100 v2 SOC = 50%. (Display shows 254W input)
Panel Specs are;
23.85 Voc
20.8 Vmp
8.03 Isc
7.69 Imp for 160W
I do not have space for additional panels, however, in a camping situation I would. As the Elite 100 v2 has an input limit of 60V at 20A, I have 2 other 150W panels that I could also Series connect, then Parallel the 2 strings near the Elite to approximately double the charge noted above. The theoretical charge would be around 590W from a 620W array due to slight Voc and Isc differences and at 80% this would charge at approx 475W.
Test complete -
I saw solar input peak at 262W and hover at around 260W for an hour or so, in the middle of the test time. Then it returned to around 240W for the back end of the time. 260W = approx 81% of rated power.
Total time to reach 100% SOC = 3 hours and 10 minutes, which is 30 minutes less than the original noted display charge time. Some of that due to the slight 20W increase of solar output.
Conclusions -
- Happy with solar performance and this also shows that, over the time taken to fully charge, the panels did not need to be moved to follow the sun.
- My expectation of the original time to charge estimate being longer was wrong and providing charge rate is stable, the Bluetti display’s time to charge is accurate if not conservative.
- Were my 2nd array to be deployed and added to the array, 20% to 100% recharge of the Elite 100v2 would take around 1.75 hours. Got to be happy with that.
In winter sunshine here in AU, I would expect a similar result, parlty due to the lower temperature increasing Voc, then reduced due to a weaker solar radiation factor. Time will tell as I’ll need to wait a few months to find out, lol. Then, there are cloudy overcast days to factor in as well.