[Upgraded] BigBlue Ultra-Light Portable 25W Solar Panel Charger with USB-A and USB-C Ports, 0.84 lbs Pocket-Size IP68 Waterproof, Folded Solar Panel Compatible with Cellphone,Power Bank,Camping Light

folds into small package, well made. Charged a 10,000 portable power bank in about 6 hours in the sun. Great back up item and small and lite. Highly recommend. Very well made, wish it came in a small case, has an elastic strap to hold it closed, but very happy with it overall

Size is good but the marketing is deceptive. While it may my 25W worth of solar panels you can't get 25W out of either port or as total output. Right on the back of the unit the outputs are printed and the highest port is the C port at 15W (5V x 3A). It's lists total output as 5V 4A which is 20W between both ports at once. In practice this is a 15W unit because that's the most you can get from one port and that's a bit disappointing compared to the advertisement at 25W. Otherwise it seems to be made well enough and while the wattage is low for what I wanted it'll work.

This thing is great. I charge my phone and battery packs on it. Even on cloudy days it still charges. In full sun in L.A. it took about two hours to charge a 5000 mah battery. I might buy another just to keep in my truck.

This is the most compact folding panel I've ever seen. Very small, but provides 25W of power, sufficient to recharge my phone, my tablet, and virtually any other mobile device I own, including power banks. Perfect for keeping in the car for emergencies or for hiking.

This product works very well on sunny days. It does what I bought it for. 👍

I took this backpacking and it worked pretty well. READ THE DESCRIPTION BEFORE USING IT! If there’s an inconsistent light, it will drain your battery more than charging it, so when I had it on my backpack to charge my phone, I couldn’t understand why my phone was just not charging! When I got back, I read the instructions. Overall, it wasn’t what I needed. I should have gotten a more powerful model. But I didn’t know. Not the product’s fault, and I’ll definitely still use it, but if you’re going backpacking, my advice is not to skimp on this piece of equipment. (Sorry for the photo from Instagram stories - it’s the only one I have)

Immediately used this on a four day backpack trip and it performed very well. Had weather every day but enough sunshine midday to recharge my iphone, inreach mini and another phone.

So the name of this solar panel is P25 and right in the title it says "25W" but do not be fooled that you will ever get 25 watts out of a single port. Its right on the box, maximum wattage from the USB-A port is only 12 watts and the USB-C port is only 15 watts max. Big Blue decided to add these together to make you think this can pump out 25 watts, which in perfect conditions perhaps it could give you the 12 + 15 watts but I've never seen that. In reality, using a solar panel alignment tool and the sunny skys in August in the midwest, I can only get 9-10 watts out of the USB-C port. USB-A port is 8 watts. If I plug an Iphone in the USB-A and an Ipad Mini into the USB-C port, the iphone charges but the ipad displays "Not charging" meaning the USB-C port doesn't have enough power output to even be considered a charger with two devices hooked up. If I charge the ipad by itself, it does charge. This is a pretty weak product for the price and should only be considered a 10'ish watt charger. You need to really value the compactness of this to pay this much.