Chinese Solar Panel Test

Testing open voltage and short current on a Sopray SR-20 and SR-60 solar panels. Both panels use monocrystalline cells. Conditions were ideal and test was 20AUG11 @ 10:00. I heard alot of trash talking on forums about Chinese panels not making claimed power. As you can see the the 20W was slightly higher on short current and the 60W was alot higher than claimed. I don't like buying Chinese crap but buying BP, Kyocera etc. is twice the money. Time will tell if they hold up structurally(I will be going over all seams with silicone).

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[PhilipMitchellGraham]

Forget this crap and make your own panels for 10% of the price. Then if they brake down you only have yourself to blame.

[762gunr]

@PhilipMitchellGraham Your an idiot. Cells alone cost .50 a watt and thats not counting incapsulant, glass, frame, diode, bus wire,solder and labor. I have made my own btw and it's not at all worth it.

[TheNewGuy028]

do you get a 25 year garentee with that pannel?

[762gunr]

@TheNewGuy028 20 year but since it's chinese I don't take it seriously.

[762gunr]

I currently have the 20W panel hooked up to a Steca PR3030 for testing. Getting 1.1A@14V into the battery after line loss and controller overhead. 15.4 net watts out of a 20W panel seems pretty good.

[TheTonyj30]

thanks for the vid, nice to see some one actually measuring output !

the chinese panels are getting better and better while the prices are dropping so its a win for everyone.

[TheNewGuy028]

@762gunr you know your stuff!

[TheNewGuy028]

mother fuckers are trying to put me out of a job with there shitty solar panels.