Inexpensive solar blanket comparison and performance

Why would you have a solar panel in partial shade? Pretty dumb idea eh!
Because a panel doesn't perform in partial shade means nothing, and certainly nothing about the quality.
Depends on the type of panel and how the panel is wired, and if the cell material is crystalline or amorphous. Personally wouldn't touch an amorphous panel.
Have a cheap folding blanket panel purchased from eBay, and it has outperformed 5 other panels per watt costing up to 6 times as much. Sure it was listed at 200W, but knew by calculating out the area was a genuine 140W and would do what we wanted, but at under $200 didn't care as I knew what we were buying.

A panel without bypass diodes will not work in shade so pointless stating so. Even with the diodes the output is severely compromised. Shade is similar to night time.Mine won't work at night either.
As Dave mentioned, calculated on area and claimed efficiency and reducing that a little bit is realistic.

In the real world you can be away from your van /car and the shade can sneak upon you , so if that happens , I like to think I am still getting some input from the solar . Especially late in the day .

Why would you have a solar panel in partial shade? Pretty dumb idea eh!

Depends how you look at it I found it a pretty good tip as I expect others will as well. Not every one goes into the tech details of how they work and how much the output is effected from a bit of shade. Not everyone parks in the hot sun all day and depending where you park taking availability into account at times, the set up you have you may get shadows during the day from trees buildings off roof racks even an awning mounted next to the canopy etc. So he has now made people more aware of how a little shade can make a big difference good work well done thankyou for the video and the info not sure what was wrong about that.

My fixed solar panel on my alloy canopy still produce power sometimes parked in the shade under my carport which is 12mts long, attached to the side of the house be it a small amount I expect the glare off the neighbours white shed wall 3mts away may help contribute to that.
I also have tinted polycarbonate panels up the centre of the carport with 2 metal panels each side the voltmeter in my dash gets up to 13.7v sometimes when the sun is overhead shining through the poly sheets something else others or myself didn't expected would happen.
The solar panel I mounted in the rear window of my wife's Elantra is under a tinted window it works fine with a small reduction in output. Just some extra useless info some may find interesting or handy.

Thing is most of the elcheapo MPPT controllers for sale are not true MPPT at all or temperature compensated. A quality precision buck boost MPPT controller is good money. Users do not realise the importance of good solar controllers and the added longevity on AGM batteries.
I am not at all fussed on blanket type panels. In the inflatable boat a necessity. Like flat/flexible panels the failure rate is huge. The other issue is all the heat goes directly into the roof on whatever they are mounted.

I also believe series is the way to go but you need a devoted reg, most dc dc units have a max input voltage well below 36 volts. I use a victron reg.

Good video. Much appreciated.