🌞 KINGSOLAR 21W Portable Solar Charger: Waterproof, Foldable Solar Panel Charger with 2 USB Ports for Camping, Cell Phone, Tablet, GPS, iPhone, iPad, Camera & More Review

Excellent portable solar charger. Easily charges two devices in the sun at the same time. Just remember to keep the device in the shade, otherwise it may heat up in the sun and not charge. This is not a product defect. This is the design of the device you are charging. I have several solar chargers and they all behave like this. Cons: (joke!) Doesn't work in the rain. Lol Recommended: yes

Port 2.5 doesn't seem to work or I don't understand something. When I plug some of these in, the charging indicator just flickers, but when I plug the same into the 2.1 port, it charges. Charging is very slow, so fast charging is not possible with this solar panel, which is a shame. However, it does charge the device, it only takes about 6 hours to charge a Samsung S10+ that is in flight mode and not in use.

It seems to work well. I've attached a video of my battery being charged in daylight. My USB Amm/Voltmeter shows 1.64 amps at 5.2 volts. The price was right. I was skeptical of product reviews because they don't really tell any facts, just "didn't charge my phone" I would recommend buying. Don't be an idiot and expect fast charging, it's 21W. Leave it and charge the battery and then charge your mobile phone with it. Phones love constant performance.

Provides enough amperage but unless you have the perfect angle, 100% unobstructed sun and all 3 panels perfectly aligned you will not get the full 5V to the 5V electronics to charge . I plugged my phone in with all settings on a clear day and it kept turning the charging indicator on and off quite a bit. Any obstacle or shadow on a tiny part of the panels and you'll lose power if you unplug the charger and then plug it back in when it's gone. Great little solar panels though, small thin light…

I should have known better than to buy something without reading reviews. But after I got it it is exactly as many said in their reviews. Intermittent power from the panel controller makes it impossible to charge a device. Loading and unloading constantly. 5 hours of direct sunlight charged a phone's battery by 1% at 4 km/h, while a battery at 30 km/h lost 2%. There's clearly something wrong with the brain on this thing, the pulsing USB charging in direct sunlight. Initially I tested it on…

I noticed that the voltage regulator has USB outputs to the top of the solar panels and to the rain. I suggest they build future models with the regulator pins down or to the side. The most serious disadvantage. There is also no ammeter on the regulator to help you find a comfortable angle for the plates. Another design flaw. And there's no pocket for the device or battery, as Manuel says, or it's so well hidden that after three searches I still can't find it. Maybe they could show where the…

I thought for almost $50 I could get a functional part. Especially a new product. Instead they sent me a used item. Evidence that someone tried to remove the plastic around the charging ports, dirt and grime under the protective cover of the solar panel area. Damage to the zipper. This is a beautiful and lightweight item. But I can't believe they sent me a used one. Likewise. That does not work. It lights up to indicate you're getting enough light, but. Are you trying to charge your iPad? nope…