just want to say, thanks for all the good info in this thread- learned more about panels than I knew before and realise now why my ebay dodgy panels don't perform as advertised!
As mentioned earlier, much of the panel specs are rated under ideal and controlled testing. Always read specs with caution. Sellers go by manufacturer provided specs.
__________________
Cheers, Richard (Dick0)
"Home is where the Den is parked, Designer Orchid Special towed by Jeep Grand Cherokee Limited"
"4x250W solar panels, Epever 80A charger and 3x135Ah Voltax Prismatic LiFePO4 Batteries".