Nekteck 28W Portable Solar Panel Charger, 2 USB-A Ports, (5V/4.0A Max) 24% Efficient Maxeon Cells Solar Charger, IPX4 Waterproof, Compatible with iPhone 12/11/11pro/Xs, iPad, Samsung Galaxy and More

The media could not be loaded. Depending on how couldy it is of course and how well you're tracking the sun.Keeping in mind that seasons, time of day and clarity of the sky effects how your solar panel would end up charging your batteries.I advise highly anyone who uses solar not to charge phones but instead use powerbanks and then charge your phone, especially when it's cloudy out and there's a little bit of sunlight.During summer you can expect to be able to charge your 30,000 mah. Best to have two separate powerbanks of different brands and variable charging speed. Like 10,000 and 10,000 using fast charging cables of good quality.Tracking the sun on angles allows you to charge efficiently. Sun moves, if it sees the light doesn't mean it will charge well. Panels have to face the sun directly.That being said, this solar set charges well and reliably for its compactness. It's comparatively priced as a single reliable quality powerbank. It outlived 4 powerbanks and I'm an active outdoorsman throughout my life. DO NOT leave your batteries in direct sunlight especially during summer they'll overheat, DO NOT put batteries in the pouch although they're covered by fabric the sun will transfer heat to batteries, they'll expand and stop charging efficiently or completely.Don't let your powerbanks to zero out, leave at least 5% charge in them for the next day.It's a great product I'm considering getting a second set because of how light it is, that doubling them down in my pack doesn't make it too heavy.So, it's worth it!

So far very happy. Was able to get 45% charge on my phone's 5000mah battery in one hour of early May sun, very impressive!I've had several chargers that were this style and have always had issues with the wires breaking in between the panels after about 6 months of heavy use, so I made sure I registered on the Nektek website for the one year warranty. Buying additional insurance also wouldn't be a terrible idea, if you plan to use it heavily. I'm going to be relying on the manufacturers warranty this time and hope for the best. The lower price of this charger allows me to worry less about it getting broken.Attaching it to a backpack is what usually causes the wires the break, but I think it's inherent to the folding design regardless, especially if the panels fold backwards on accident.These chargers also don't work well in high heat, so let it cool off from time to time to keep it charging your stuff. The windier the better.If it's slightly cloudy it's best to charge an external battery (power bank). Charging your phone directly from the solar panel will cause it to connect and disconnect from charging constantly and will actually drain the phone's battery. On clear days it's fine, though.

I bought this solar charger out of curiosity - do a few small solar panels really produce enough electricity to charge a phone? After buying and trying this item out, I can confidently say that they do!The solar charger is made well, with a nice sturdy and rigid feel. It folds up nicely to tuck away into a bag or in a car, and without many cables in the pouch, it's surprisingly thin. Keep in mind if you put a bunch of cables in the pouch, it will add to the thickness, but it's still not thick enough to be a burden.I should add that the charger comes with a micro USB cable, which I wish was USB C at this price point but I have plenty of USB C cables lying around. You also get two carabiners which could come in handy to attach it to a backpack or other surface using the attached mounting holes.As I said before, the solar charger comes with an attached zip pouch that you can put your phone in while it's charging, as well as store cables and other necessary items when the charger is not in use. The pouch comes in handy for protecting your phone from the heat of the sun while you charge it, so that's a big plus. Inside the pouch is a plastic brick with two USB ports, so you can charge two items at the same time. I wouldn't recommend charging two at the same time, but I'll get to that later.One interesting quirk of this particular solar charging device is that it does not come with a battery or any way to hold a charge. Basically, if you want to charge your phone, you will have to connect the phone to the solar charger while it's in the sun or, alternatively, you could use the solar charger to charge a portable battery pack if you'd rather charge your phone at a later time. I wouldn't call this a flaw, but it's something to keep in mind if you're looking for a solar charger like this.Next up, I'll give some information about how well the charger works. As I said, I was curious, if not a bit skeptical before purchasing this product. To test it out with a variety of phones, I plugged in a Samsung Galaxy S10+, an iPhone 11 Pro Max, and an iPhone 7+. While the charger does not support fast charge for Android phones, it gets the job done. When two devices were plugged in at the same time, there was a slow down in charge speeds. The slower charge rate while trying to charge multiple devices was expected, but it's nice to have the option in case you need to charge two things at once in a pinch and you're not in a hurry.I have seen some other reviews saying that the charger slows down when it is partially covered by shade, but this only happened to me when 2 out of the 4 solar panels were covered. When just one panel was covered, I did not see a decrease in charge speeds.All in all, I'd say this is a pretty good charger for what it is. I would like it to be a bit cheaper, but overall I'm satisfied. I'm planning to keep this charger in my car in case of emergencies and I'm sure it'll come in handy if I ever need to use it.

I section hike the south island of nz for five mths a year/ 2-3 weeks at a time... I purchased this solar charger 3 years ago and have been presently surprised by its durability and performance... It does actually charge a 10,000 mAh power bank in under 2 hours in good sunlight( faster than mains power)... I've dropped it in the river, dropped it down a cliff ( was lowing my pack down a bolder and got to watch it slip and fall 200m with the solar panel on the outside) and generally given it a good thrashing but it just keeps going...