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Nekteck 21W Portable Solar Panel Charger, Waterproof Camping Gear Solar Powered Charger with 2 USB Port for iPhone X/8 Plus, Samsung Galaxy s9/s8,iPad, Tablet and Any USB Devices

(10 customer reviews)

Price: $55.99
Sale Price: $42.49

You Save: $13.50

【High-Efficieny】The high-efficiency of its three solar Monocrystalline panels cell is based on SunPower Maxeon technology, that allows them to reach 21%-24% of conversion efficiency while providing enough power (up to 2.0A max per port or 3.0 A max overall)
【Advanced Smart IC Chip Technology】 Microchip support to detects the electronic devices plugged into the USB ports for fast charging two phones simultaneously under safe conditions as well as the prevention of overheating
【Portable and Foldable】The 6.3x 11.1x 1.06 inch (when folded ) small size and 17.3-ounce design that can easily squeeze in your backpack offers portability and simplicity, and the attachment hook makes it ideal for connecting to a backpack while you’re on the hiking or walking around town
【Dualable Design】The canvas surface and precision stitching withstand rugged for outdoor use and the PET polymer cover that guarantees IPX4 waterproof level protection will make the panels resistant to water and even dust
【Package】Nekteck 21W Solar Charging Panel, 2.6ft(80cm)Micro USB Cable, User Manual

Brand Nekteck



Nekteck 21W Portable Solar Panel Charger

solar charger


Note: This solar panel charger does NOT store power, you will need a power bank to store power or connecting to your device directly to charge.

Using the power of three High-efficiency solar panels, the Nekteck 21W Solar Charger is your new best friend when you’re far from home. Travel with ease using the charger’s bungee loops which attach to your backpack. Unfold the device and expose the 21 watts Sunpower solar panel, each section putting out approximately 800~1000mA under strong sunlight. Dual USB charging ports allow up to two devices to recharge at once at a maximum output current of 3 Amps total. No matter where you go, the Nekteck Triple Panel Solar Charger will be ready for you.

Fast Charging Technology : SmartIC Technology is the latest charging solution it has its own microchip that detects the device plugged into through USB PIN signals, which gives output at full power and fast charging speed. Not all charging ports are created equal. Standard ports only charge Apple OR Android devices at full speed. But with SmartIC technology, each port intelligently identifies your device and seeks to maximize its charging speed up to 2.0 amp per port or 3 amps overall.

Dual USB Ports Dual USB ports with maximum 3.0A total output and capability of charging two devices simultaneously. Keep your devices fully charged on the go in no time.

High Quality: The canvas is created to withstand rugged durability for outdoor use. with Ultra lightweight (18 oz) and ultra compact (6.3x 11.1x 1.06in folded or 26.3x 11.1in opened) design, it easily fits in your backpack.

Broad Compatibility: Compatible with all iphones, tablets, GPS, Camera and other USB-supported devices.


  • Power input: 21W High-efficiency Panel
  • Power output: 5V Standard USB port x 2
  • Output current: up to 3A (two USB port used simultaneously) up to 2A (one USB port used)


Package Include:

  • Nekteck 21W Solar Charger
  • 1x Micro USB cable
  • 1x user manual
  • 1x metal hooks

Additional information



10 reviews for Nekteck 21W Portable Solar Panel Charger, Waterproof Camping Gear Solar Powered Charger with 2 USB Port for iPhone X/8 Plus, Samsung Galaxy s9/s8,iPad, Tablet and Any USB Devices

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    Amazon Customer

    This is a very good product.. IF you know how to use it.. by using it, i dont mean “plug it into your iphone and expect 0% to 100% in couple hours”.. you MUST buy a usb power meter tester! this is the only way you will test your charging rate! and make sure charge rate increases after a cloud passes.. yea you can plug it in to your iphone and it will show charging, but when the cloud passes, you must look into your usb power meter if the charging rate increases again, if it does not, this product is useless for you but you cant blame it.. i use a EasyAcc 26,000 mah battery pack with it, the Solar Charger has 2 outputs that you can connect to a EasyAcc battery pack into its both inputs.. so; with this battery pack; if a cloud passes, obviously the charge rate decreases to about .15amps depending on weather conditions.. charge rate should automatically increase after a cloud passes and the sun shine is out.. my iPhone 6s doesn’t do that, when the sun is out i get .95amps, thats very good, as soon as a cloud passes, i get .15ish amps, then it stays like that for the rest of the day till i manually unplug and plug the iPhone 6s in it.. the EasyAcc automatically allows charge rate to increase after a cloud passes..I thought i had figured it out.. its fun to see the charge rate as you are charging your “anything” using the sun.. but it is not comfortable to plug the USB Power Meter Tester into the back of the panels, hold it at the same time and watch the charge rate.. I bought USB extension cables to plug them into the Solar Charger and than plug the USB Power Meter.. BIG MISTAKE!!! the cables only allow .46amps MAX, they slow down the charge current.. make sure your cables are good, mine aren’t.. but when i plug the USB Power Meter directly into the Solar Charger, i get .96amps into my iPhone 6s (10am sunlight in New York).. test it out before you use it.. all cables, phones, battery packs are different.. research, research and again, the EasyAcc 26,000mah power bank works amazing with this unit, and so as the RavPower 26,800 mah I got.. its only down hill is that its got only 1 input to charge the device, not 2 inputs like the EasyAcc.. I also have a Mophie 12,000 mah battery pack, this one will charge as the sun is looking at it, but once the clouds block the sun, the charge current drops, and will stay like that very low till the night.. RavPower and EasyAcc automatically increase charge current as the sun begins to shine..Just because you see a charging icon on your iphone does not mean you are charging it at a good rate.. same for battery packs.. test your stuff and this Solar Device is for you!Kinda sucks that no one warns about this issue, i learned the hard way..I could of not known this product and gave a 1 star review? many negative reviews are by the people who don’t know how to use this product and did not test it.. giving this a 1 star when its a good product that id give 10 stars if i could!

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    X. Tan

    Nekteck 20W Solar Charger with 2-Port USB Charger Build with High efficiency Solar Panel Cell for iPhone 6s / 6 / Plus, SE, iPad, Galaxy S6/S7/ Edge/ Plus, Nexus 5X/6P, any USB devices, and moreI wouldn’t spend much time talking about the aesthetics, as it’s well addressed in other reviews. It’s sizable, and feels very well made. I like the mesh pocket design on the shade-side as things get quite hot under the direct sun and that design avoids your devices’ lithium battery from exploding.I bought this charger to charge my power banks, and one of them has 8 3400mah panasonic 18650 batteries in it that’s almost 28,000mah! I left the charger in my small side yard plug into the power bank, and it took it a couple of days to charge it up! I didn’t follow closely on exactly how many hours of sunshine it has received (my estimate is 6h/day because building shades) or the totally Wh or Ah but it’s pretty quick in my opinion.Just to make it more measurable, I hooked it up with a USB power meter (see pictures) under a moderately shiny day (not very shiny at all), and it’s pumping 2.3A at almost 4V. It’s already over its spec amps! I didn’t connect the 2nd port to test its real full capacity which I will do later on. Besides, it’s still a big mystery how it distributes the power supply to its two ports, and I will do a little research and share with folks here later on.Overall it’s a decent product that gets things done. I like it.

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    T. Benedict

    Tried it out today and it worked great. It charged my HyperJuice Mini in about five or six hours, and that gives me enough charge for about 75% of my iPad. It’s for my earthquake kit and for camping, so that’s adequate. I appreciated other reviews suggesting to not charge directly to a iPhone or iPad, but to store the juice in a battery pack. I just draped over a chair on my front porch. Super easy. And I also appreciate the review that said not to use too long a cable. I would’ve been tempted to use the longer one and put the battery pack in the shade so my battery packs wouldn’t get too hot while charging, but I just stuck them underneath the charger to keep them out of the direct sun.

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    Anthony DiSante

    In my original review, I complained that I was only getting about 5W from this panel, not the 20W that’s advertised. It turned out that this was due to my using a long USB cable (8 foot). Now, if I switch to a short 2-foot cable, I do indeed see the “full” output: roughly 9W. It’s still not 20W, because you can only get that by plugging in 2 devices at the same time — you get ~10W per port for a total of 20W. So you can’t actually charge one device at a rate of 20W.I’m changing my rating from 3 stars to 5 stars, because I do really like this panel, and it basically does what it says it’ll do. Still, it is frustrating that you can’t use a longer cable and get a full-power charge. I put the panel outside my window and run the cable into the house, which I obviously can’t do with a short 2-foot cable. And it’s also frustrating that you can’t charge a device at 20W even though it’s a 20W panel.Anyway. I’ve been using this panel on a daily basis for several months now, and I do recommend it — at least until they release a 40W version, which should be able to deliver 20W through my long cable, I hope!One other nice feature: this panel is extremely water resistant. Mine’s been outdoors in the snow and rain for about 9 months, and it’s still working great.

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    This Nekteck 21W solar charger does pretty much what it says. Just note that 21W is the maximum panel rating; 5V*3A = 15W of usable USB power output, depending on the connected devices. That’s plenty for my purposes. I was able to charge two power banks at the same time, both at just over 5V 1A. Both the PowerGen Mobile Juice Pack 12000 (several years old) and the NiteCore F1 (new 18650 charger/power bank) handled intermittent shade just fine and they resumed charging when the sun returned. I was able to charge a phone around 2A, but I’ve read that some phones may not resume charging after low voltage events from clouds passing. The photo shows 7W being delivered to my PowerGen while the other port is delivering just over 5W to the F1. The volt and current meters are connected to the PowerGen.The folding design is a nice balance between weight and toughness. The zippered pouch, velcro, and tie-down grommets are nice touches.

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    To start: I did not receive this product for free or at a discount. I’m writing a review because I’ve been really happy with this solar charger.I’ve had the Nekteck 20W Solar Charger with 2 USB Ports for about 5 months. It is well-made and folds up very conveniently. But what I’m especially impressed with is its performance. It quickly charges my iPhone in bright sun — it’s quite comparable to being plugged into a wall outlet. It also works well when cloudy. It takes about 2 to 3 times as long to charge my phone on a totally overcast day (“bright clouds”). And I’ve been especially surprised to find that it will actually charge devices quite effectively through a window that gets a lot of afternoon sun.I’ve found it easiest to use the Nekteck solar charger to charge a separate power pack, and then use the power pack to charge your phone, tablet, etc.Overall, I’m a very satisfied customer. I can honestly say I didn’t expect it to work as well in sub-optimal conditions as it does!

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    I took this on an 11 day backpacking trip to New Mexico. I attached it to the top cover of my backpack so that it could charge as I hiked. I used it to charge an external battery pack during the day that charged my phone at night. This charger has plenty of surface area. I met a lot of other hikers with smaller solar chargers that complained that their chargers could not provide enough power for their phones. Not only was I able to keep my phone fully charged, but I was able to keep several of the other phones in my group charged as well. I definitely recommend using a battery pack rather than charging phones directly while hiking. I tried charging a friends iPhone while I hiked. The phone vibrator buzzed every few seconds whenever I walked under the shade of a tree, which got real annoying real fast, and I think that the energy consumed in all of those buzzes probably used more energy than the phone was collecting. Another tip is to run a cord to the items that you are charging away from directly under the solar cell. Since the sun is directly shining on the solar cell, he area directly underneath tends to get hot, and batteries and phones stop charging if they get too hot. The solution is to run the USB cables to your devices in areas that are away from direct sunlight.

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    Mother Bear

    Took this solar charger on a two week camping and kayaking trip and loved it! We were a group of about 20 campers and we had all bought different solar chargers so it was fun to compare whose worked best.I’ll just say people were fighting over getting to use my charger! It doesn’t perform miracles but you could go from 20% battery life to 70% in a couple hours of full sun. I will say battery packs charge quicker than phones, and charing two devices as opposed to one makes charge slower. FYI, the solar charger/flashlight combos with the cranking system fared the worst in our group.

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    This solar charger works very well and it weighs exactly 444 grams (this does not include the carabiners or the USB cord, just the solar panel itself). I mainly use it to charge my LG Leon phone and, in full sunlight, it takes about 2.5 to 3 hours to fully charge up the battery from a 15 percent charge. I usually set the charger up at an angle in a south-facing window so, that being said, I could probably get a slightly faster charge if I put the solar charger in direct sunlight without a pane of glass being in the way. Anyways, it’s good enough for me. I also use the charger to charge up AA and AAA Ni-MH batteries via a USB charger which I then use the batteries for various items like small radios and headlamps. Also, I’ll mention that it’s better to charge a portable battery pack (I have a 10,000 mAH one and it’s plenty for my needs) than to directly charge the phone itself. Oh, and a couple other things. When I charge anything I keep it in shadow as to prevent it from overheating (I don’t trust sticking my phone in the pocket). In addition, I use a USB cord that is about 18 inches when I use this charger. It seems I get a faster charge with the 18 inch USB cord than with the USB cord that is provided with the solar charger, which is quite a bit longer. Anyways, I didn’t mean to be long-winded but I hope this helps out anyone that happens to be reading this.

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    Justin Sever

    *** UPDATE BELOW*** I bought the version of the solar charger with the extra solar panel to ensure there would be enough light to charge my iPhone 7 Plus. It only works 30% of the time, with the other giving an error saying “This accessory may not be supported” then refuses to charge. The times it does work, it is only good until the first shadow over the panel or someone walks in front of the charger. It then throws the error mentioned above then even when full direct sunlight returns, it will not charge without unplugging and plugging back in. It really needs to be used to charge a battery backup vice the phone directly.——I was contacted by Nekteck after I posted the above review. The worked with me and got another unit sent out to me. The replacement has no problems and works great. I’ve been using it as advertised and it has been fantastic. Many times when I leave my phone in the car, I will leave the solar panel on the dash and when I come back, I have a fully charged phone. It is great!Thanks Nelteck for working with me and providing outstanding customer service!

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