ECOWORTHY public their solar panel ICO-SPC-20 as 18V 20W (@ Aliexpress).
In reality, this is very low performance panel providing less than 5W at sunny day.
This video comparing this panel with another panel about the same size.
The Eco-Worthy is 41X31C”m (1271cm2) and the reference panel is 38X38 cm (1444cm2).
The reference panel is 13% larger but providing 84% more power!
At sunny day, the reference panel providing 57.4W/M2 and the Eco-Worthy is providing 35.4 W/M2 only.
At less optimized condition (less sunny) differences are worse.
I sent the numbers to ECOWORTHY Official Store at Aliexpress, but they claim the product is perfect, and keep asking for additional info.
So I made this video,
DO YOU THINK IT”S PERFECT???
Test was done with MPP controller adjusting to 18V (panel side).
Post time: Jun-13-2017