---
product_id: 21893275
title: "Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More"
brand: "nekteck"
price: "€ 8.85"
currency: EUR
in_stock: true
reviews_count: 7
url: https://www.desertcart.gr/products/21893275-nekteck-21w-solar-charger-5v-3a-max-with-2-usb
store_origin: GR
region: Greece
---

# Foldable & ultra-portable 3A max output current 21W max solar power Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More

**Brand:** nekteck
**Price:** € 8.85
**Availability:** ✅ In Stock

## Summary

> ☀️ Power your adventure, stay connected anywhere!

## Quick Answers

- **What is this?** Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More by nekteck
- **How much does it cost?** € 8.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/21893275-nekteck-21w-solar-charger-5v-3a-max-with-2-usb)

## Best For

- nekteck enthusiasts

## Why This Product

- Trusted nekteck brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual USB Ports:** Charge two devices simultaneously with smart IC chip for optimized fast charging.
- • **SunPower Maxeon Tech:** Harness up to 24% solar conversion efficiency for reliable power anywhere.
- • **Backpack-Ready Design:** Includes hooks and carabiners for hands-free charging on the move—never miss a beat.
- • **Compact & Lightweight:** Weighs just 1.12 lbs and folds to fit effortlessly in your backpack or briefcase.
- • **IPX4 Waterproof Ruggedness:** Weather-resistant canvas and PET polymer shield keep you powered rain or shine.

## Overview

The Nekteck 21W Solar Charger features high-efficiency SunPower monocrystalline panels delivering up to 21 watts of clean energy through dual USB ports with smart IC technology. Its IPX4 waterproof, foldable canvas design weighs just over a pound, making it the perfect portable power solution for hiking, camping, or daily urban use. Compatible with iPhone, iPad, Samsung Galaxy, and more, it ensures you stay charged on the go with rugged durability and convenient backpack attachment options.

## Description

desertcart.com: Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More : Cell Phones & Accessories

Review: Works well for backpacking and good quality for the price - I purchased this skeptical that it would perform well or provide good functionality for the price. I was pleasantly surprised that the packaging and form is perfect for backpacking, and the panel charges adequately. On a partially overcast Colorado day, it would not charge my iphone X directly since it did not generate enough voltage for charging. However, it did charge -- at reduced capacity -- my Anker battery pack (16000 mAh) at 4.95 volts and 2000 mAh output (approx 10 W-hours output). On a sunny Colorado day, it charges both devices at 5 volts and 3800 mAh, or 19w-h ... closer to rated capacity of 21 W, and pretty close to theoretical maximum. For the 1 pound weight, I think this is a great option for backpacking long distances where you do not have access to external power to charge the battery pack. Like me, you can charge your battery pack on lower output days and then use the battery pack to charge the phone or other devices requiring more consistent output. If you use this directly on your pack, it will disconnect from charging periodically in shade or wrong sun angle and your phone will keep beeping to let you know. You avoid this problem by charging a battery pack that is then used to charge a phone. From a dead battery back, this panel with full sunlight (pointing panel to sun throughout the day) charged the 16000 mAh Anker portable battery in a little over 8 hours. Since I don't plan on staying in a campsite for 8 hours, I suspect I can get at least half that capacity tied to a pack which hiking. I found that orientation (tilted toward sun versus pointing straight in air) did not significantly affect output by more than 20%. Since I don't use more than 5,000 mAh per day between my iphoneX and Garmin Explorer GPS unit, this solar panel should sustain my power needs unless I am in a shaded forest or inclement weather. The functionality of the velcro with the folding panels makes for a good size to hang from a pack, and also to fold up and put in the pack when not in use. The compartment on one end containing 2 USB connectors is the right size to hold a 16000 mAh Anker battery pack (and keep it shaded from sun while charging). The two provided small carabiners and grommets on the end facilitate hanging it for charging. I added 550 cord to the carabiners to make it more useful for hanging from limbs or other objects beside my pack straps. I have seen it repeal water from the panels; however, would recommend that you protect the compartment with the USB connectors from getting wet. Seems they would not respond well to this. If you kept this last compartment dry, I am fairly certain the panels themselves could get a little wet without damage.
Review: Had No Luck... my mistake, my mistake.. my mistake.. - 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!

## Features

- 【High-Efficieny】The high-efficiency of its three solar Monocrystalline panels cell is based on SunPower Maxeon technology, that allows the usb solar charger 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】 The Microchip of Nekteck solar phone charger 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 the portable solar charger 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 solar panel resistant to water and even dust
- 【Package】Nekteck 21W Portable Solar Charger, 2.6ft(80cm)Micro USB Cable, User Manual

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 3 Amps |
| ASIN | B017GQ7OEA |
| Best Sellers Rank | #480,578 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #253 in Cell Phone Solar Chargers |
| Brand | nekteck |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,163) |
| Efficiency | High Efficiency |
| Included Components | Nekteck 21W Solar Charger, 2.6ft(80cm) Micro USB Cable, User Manual |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.12 pounds |
| Item model number | SM-B3122 |
| Manufacturer | Nekteck |
| Material | canvas |
| Maximum Power | 21 Watts |
| Maximum Voltage | 5 Volts |
| Output Voltage | 5 Volts |
| Product Dimensions | 11.1"L x 6.3"W x 1.06"H |
| Special Feature | Dual-port USB Output, High-efficiency Solar Panel, Portable and Rugged Design |
| UPC | 634324695996 |

## Product Details

- **Brand:** nekteck
- **Efficiency:** High Efficiency
- **Item Weight:** 18 Ounces
- **Material:** canvas
- **Product Dimensions:** 11.1"L x 6.3"W x 1.06"H

## Images

![Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More - Image 1](https://m.media-amazon.com/images/I/91l2B1d5tQL.jpg)
![Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More - Image 2](https://m.media-amazon.com/images/I/71P5Ihp8XHL.jpg)
![Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More - Image 3](https://m.media-amazon.com/images/I/71D4RdanXeS.jpg)
![Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More - Image 4](https://m.media-amazon.com/images/I/41yWFX+I4dL.jpg)
![Nekteck 21W Solar Charger(5V/3A Max) with 2 USB Port, IPX4 Waterproof Portable and Foldable Hiking Camping Gear SunPower USB Solar Panel Compatible with iPhone, iPad, Samsung Galaxy, and More - Image 5](https://m.media-amazon.com/images/I/813HGUBaThL.jpg)

## Questions & Answers

**Q: Can you connect an inverter to this ?**
A: think the question was asked to learn about the system...inverter would not be necessary due to the lack of power being converted to ac..

**Q: Q: When the charging process is interrupt by cloud or trees will the charging countinous automatically or must i plug out and plug in the smartphone?**
A: Ive found that the device you're charging has more to do with the restart or not. My easyacc power banks restart on their own  when connected to my Aukey and Nektek chargers, but my cheaper power banks wont. They need to be separated and replugged each time the wattage changes. (From a cloud, shadow etc)

**Q: Is it water resistant?**
A: Yes

**Q: How much does the Nekteck weigh?**
A: about a pound

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well for backpacking and good quality for the price
*by E***R on March 15, 2019*

I purchased this skeptical that it would perform well or provide good functionality for the price. I was pleasantly surprised that the packaging and form is perfect for backpacking, and the panel charges adequately. On a partially overcast Colorado day, it would not charge my iphone X directly since it did not generate enough voltage for charging. However, it did charge -- at reduced capacity -- my Anker battery pack (16000 mAh) at 4.95 volts and 2000 mAh output (approx 10 W-hours output). On a sunny Colorado day, it charges both devices at 5 volts and 3800 mAh, or 19w-h ... closer to rated capacity of 21 W, and pretty close to theoretical maximum. For the 1 pound weight, I think this is a great option for backpacking long distances where you do not have access to external power to charge the battery pack. Like me, you can charge your battery pack on lower output days and then use the battery pack to charge the phone or other devices requiring more consistent output. If you use this directly on your pack, it will disconnect from charging periodically in shade or wrong sun angle and your phone will keep beeping to let you know. You avoid this problem by charging a battery pack that is then used to charge a phone. From a dead battery back, this panel with full sunlight (pointing panel to sun throughout the day) charged the 16000 mAh Anker portable battery in a little over 8 hours. Since I don't plan on staying in a campsite for 8 hours, I suspect I can get at least half that capacity tied to a pack which hiking. I found that orientation (tilted toward sun versus pointing straight in air) did not significantly affect output by more than 20%. Since I don't use more than 5,000 mAh per day between my iphoneX and Garmin Explorer GPS unit, this solar panel should sustain my power needs unless I am in a shaded forest or inclement weather. The functionality of the velcro with the folding panels makes for a good size to hang from a pack, and also to fold up and put in the pack when not in use. The compartment on one end containing 2 USB connectors is the right size to hold a 16000 mAh Anker battery pack (and keep it shaded from sun while charging). The two provided small carabiners and grommets on the end facilitate hanging it for charging. I added 550 cord to the carabiners to make it more useful for hanging from limbs or other objects beside my pack straps. I have seen it repeal water from the panels; however, would recommend that you protect the compartment with the USB connectors from getting wet. Seems they would not respond well to this. If you kept this last compartment dry, I am fairly certain the panels themselves could get a little wet without damage.

### ⭐⭐⭐⭐⭐ Had No Luck... my mistake, my mistake.. my mistake..
*by A***R on November 17, 2017*

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!

### ⭐⭐⭐⭐⭐ Review
*by S***N on March 11, 2021*

I've been using this for a few months now, placing it on the balcony and connecting various power banks to it and they all charge a lot quicker than I expect, my two 10k banks charge in a few hours, the 20k takes most the day. With this method I get enough to charge my mobile phone (and other devices) and enough leftover that even with a few gloomy rainy days (ie, I don't want to put electronics out in case they get wet) I still have enough stored up to keep the phone topped up and never have to use the wallwart again, talking on sunshine!

## Frequently Bought Together

- Nekteck 21W Solar Charger, 2 USB Port Waterproof Portable Camping Charger with High Efficiency Solar Panel Cell Compatible for iPhone X/8 Plus/8, iPad, and Any USB Devices
- GIRIAITUS Camping Multitool Accessories Gifts for Men Dad 16 in 1 Upgraded Multi Tool Survival Gear with Axe Hammer Pliers Saw Screwdrivers Bottle Opener Whistle & Portable Sheath For Hiking,Fishing

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-26*