340Watt - $117

[ridgeway]

The controller shows 21 Volt - 0.3 KW, which IS 300 Watts.
So I'm happy.

You are on the wrong setting. the 0.3kw is a load reading. Look at the PV readings for power coming in from the panel.

 

[maki2]

Show her a diagram or video that explains where it is supposed to be tested from. Frequently visual aids makes more sense to people who are not experts in testing such things.

 

[Matlock]

Jim, I've got hazy daylight here all day in Ohio.
Panel numbers in these conditions at 11:00 AM, 22* are;
IMP 3.4
VOC 21.7
Panel size is 26.25" x 44.5" w/ only 4 grommets.


I'd love to find a 300+ watt flexible for under $200 but it's not gonna happen.

 

[Camper]

All the 300-watt panels I've seen online are much larger

 

[terranaught]

at 26"x40" and 20% efficiency you have a 100w panel max.

 

[Sofisintown]

You are on the wrong setting. the 0.3kw is a load reading. Look at the PV readings for power coming in from the panel.

I had no load on except for the display panel of the mppt charger.

 

[Sofisintown]

I know, right? They are out of 120 and 240s, and the 340 is $117.
Even if it turns out to be 100, I will complain but keep it... Delivery on the 26th. We'll see.

Let's update this.
The panel was $100 watt, but still a good deal
I put it on my roof with 3M™ VHB tape, and it is still holding strong.
BUT
I noticed a couple of days ago that my battery was only 12.2 Volt (60% or so) despite the van sitting in the sun.
I checked the panel, and the top plastic layer was dried out and opaque - milky looking, so not much light getting through.
I softly sanded some of it off and sprayed the panel with clear gloss KRYLON, so it is transparent again, but I don't know how long this will last.
For now it is charging again.

SOOOOO, the panel barely lasted a year and 6 months before it needed mending, and the future is unknown.
When I replace it, I will use the regular glass, rigid ones.

 

[Cajunwolf]

I bought eight 255-watt used Canadian Solar panels for $60 each for San Tan Solar. Down here in South Texas, I can average 1500 watts in summer and 1300 in winter. These panels are from large commercial installations. The ones I received were pretty much blemish-free and barely 3-years old.

 

[lauratheexplorer]

Let's update this.
The panel was $100 watt, but still a good deal
I put it on my roof with 3M™ VHB tape, and it is still holding strong.
BUT
I noticed a couple of days ago that my battery was only 12.2 Volt (60% or so) despite the van sitting in the sun.
I checked the panel, and the top plastic layer was dried out and opaque - milky looking, so not much light getting through.
I softly sanded some of it off and sprayed the panel with clear gloss KRYLON, so it is transparent again, but I don't know how long this will last.
For now it is charging again.

SOOOOO, the panel barely lasted a year and 6 months before it needed mending, and the future is unknown.
When I replace it, I will use the regular glass, rigid ones.

I’m just getting ready to put my flexible solar panels on my van…Is it a good idea to spray my panels with KRYLON clear gloss before installing to avoid the dried out opaque problem you described?

 

[frater secessus]

I’m just getting ready to put my flexible solar panels on my van…Is it a good idea to spray my panels with KRYLON clear gloss before installing to avoid the dried out opaque problem you described?

I would not put anything on them. If the panels aren't purchased yet, my understanding is (if one is dead-set on flexible panels) the way to avoid this form of degradation is to buy versions encapsulated with ETFE.