20W USB Foldable Solar Panel, Portable Solar Charger 20W Foldable Solar Panel with 5V USB for SmartPhone, Tablet, Laptop, Camera Waterproof Solar Cells Charger for Outdoor Use (Black)

My son was very pleased to receive this item. He said it works very well and has used it to even put some charge in his phone as a test. Ideal for camping to attach to the tent. Very light so goes in a back pack easily. Seems to give ample power to make use of.

Super addition to event equipmentNot bulky as it does not have an integrated battery.Highly recommend

Honestly very happy with this! Initially plugged in a large power bank and it did nothing, however I tjink this was the power bank and not this panel, I've directly charged an iPhone, S24, and an S9 from it (hanging in a sunny window) and was getting around 0.25% - 0.5% battery charge increase per minute... which for a solar charge of this size and price point I'm very happy with.Glad I took a shot on this one rather than similar branded ones I've seen that are double the price.

I've been testing this over the last couple of days with different conditions of light and it fails to charge anything from a small power bank to ear buds case

Ideal power bank trickle charger defo a must have for hiking

You're not going to be powering your Tesla with this, but on an overcast February afternoon in the UK it managed to put 500mah into a powerbank...enough to give some phone use when off grid. In full sunshine early March it charges the powerbank at 900mah. That is NOWHERE near the advertised 20 watts, but it was never going to be for a folding panel this size. 5 watts is optimistic but... that is more than enough to power your phone when off grid. DON'T use it to charge your phone direct.....it will go off and on every time there's a cloud, using more power to do this than it's getting. Charge a powerbank then use that to charge your phone.

If you want to charge your battery right away this is not for you. I put one of my 3 power banks on charge and after a few days it's fully charged. It's not very powerful but does charge when sun is out. In UK which is mostly summer would be great for hotter countries

Sorted out my charging needs for multiple items, worked better than I expected it to, sound bit of kit