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I'm only half kidding. I'm a bit of a prepper and I have lots of powerbanks and devices that charge from USB but besides idling my truck I really had no other way to charge any of them in case of a long-term power outage which seemed a bit of an oversight on my part.
Not like this solves the issue. 30 watts (under ideal conditions) isn't much but it's a start.
That's a massive panel for so little wattage.
Look up 25% next time, they maximize the area! N-type's are also great for enduring high temps and weathering high uv.
Is 25% the brand name?
Refers to the efficiency. 25% needs less area to generate the same amount of power. The efficiency has been steadily rising from 18% now to 25%.
Oh I get what you're saying now, wow, I had to read it like 10 times, lol. My bad.
Yeah it's a lot of panel for 30W.
To add to my comment, many cheaper portable brands underperform greatly as well.
Get a rigid panel (not flexible) and you'll see a huge improvement.
The flexible panels are great for keeping weight down, though. Probably the only way to go if you're hiking or backpacking!