Top Picks

10 Best 21W Solar Charger: Expert Reviews

If you’re in the market for a 21W Solar Charger, you have a few different options to choose from. We’ll discuss the types currently available in the market, the pros and cons of each, and our top pick for the Best 21W Solar Charger.

21W Solar Charger – Best Sellers

Best 21W Solar Charger – Top Picks

I have already minimized your options from hundreds to only 10 21W Solar Charger and here you go with a quick comparison chart which should leave no confusion.

Ryno Tuff Portable Solar Charger for Camping - 21W Foldable Solar Panel Charger 2 USB Ports - Waterproof & Durable, Compatible with iPhone, iPad, Galaxy, LG, Nexus, Battery Packs, & All USB Devices
  • HIGH EFFICIENCY SOLAR CELLS - Get up to 25% conversion by using the most powerful solar cells in the market - Sunpower X-Series. The 21w Solar Charger can charge your cell phone or tablet in as little as 2 hours. Never be stranded without power again. Compatible with iPhones, Android phones, tablets, batterypacks and any USB electronic device.
  • MAXIMUM POWER IN A COMPACT SOLUTION- Our folding solar panel is smaller and lighter than other brands and equally powerful. Getting the same 21 watts in only 3 panels which extend to 11.8 inches wide by 18.1 inches high and weighing less than 1lb. When not in use, it folds to a really portable size of 5.9x11.8 inches. Making it so lightweight you won't even know your carrying it.
  • UNIQUE iSOLAR TECHNOLOGY WITH ADDED SAFETY FEATURES - Charge 2 devices at once with the unique charging algorithm which will distribute power in the most efficient way. Will automatically stop charging when fully charged or device is overheated. Delivers 2.4amp per port with a max of 3amps when both ports are in use. You can also store the devices in the protective pocket while charging.
  • WATERPROOF AND DURABLE - The rugged 600D waterproof PVC canvas material will protect your solar panel when backpacking, hiking, or traveling. Includes two carabiners for easy set up on your backpack or tent. We also offer a “Lifetime Warranty” so any time your solar panel USB breaks down during normal usage we will replace it free of charge.
  • PLANT A TREE AND HELP US SAVE THE PLANET! Yes we are tough on the outside but inside we’re just real softies. In addition to providing you with quality products our mission is to protect the planet we live on especially its forests. We want to preserve the beauty we enjoy for the next generation. With every purchase of a Ryno Tuff Solar Charger we will plant a tree for you through the National Forest Foundation.
21W Solar Panel Charger, Foldable and Portable Solar Panel with 2 USB Port, Waterproof Solar Panel Charger for Hiking, Backpacking, Camping, Compatible with iPhone, iPad and More USB Powered Devices
  • 【High efficiency solar panel charger】 21W solar panel convert solar power maximum up to 20% in enough sunshine. The solar panel adopts a new generation of ETFE lamination technology and deep embossing process.The EFTE film of solar panel is more durable and clean than traditional fabric. Notice: The solar panel not store solar power, it directly charging for USB devices in sunshine.
  • 【Foldable and portable solar panel】 The solar panel is lightweight , thin and portable. When you want to hiking or camping, you can take the 21W foldable solar panel. The solar charger with two hooks easily be attached to your backpack or travel bags.
  • 【Wide Compatibility】 Solar panel charger using high quality USB junction box, 5V/2A output, voltage stabilization and current stabilization. It is compatible with most mobile phone, iPad and other 5V devices. Solar panel can provides power for 2 USB devices at same time. Notice: Please keep the USB port dry.
  • 【Power Indication】 The red light will bright, when the solar panel receive solar power. You can tell if the solar panel is charging the product based on the light.
  • 【Waterproof】 The solar panel uses waterproof materials to avoid damage to the solar panel by raindrop. You don't need to worry about terrible cleaning, the smooth surface is easy to clean. USB port is not waterproof, please keep them dry.
Mgalor 21W Solar Charger 3 Foldable Solar Panels Dual USB Outputs SunPower Charger Compatible with iPhones, iPad, Android Phones and Other Electronics
  • High-current and high-speed power supply: 3 solar panels with a total max power of 21W, and the USB cable can output a high-speed current of up to 3.5A, which can provide sufficient current for 5V digital devices to meet the needs of fast power supply
  • Dual USB Ports: can charge 2 devices at the same time in direct sunlight.
  • Safe and Reliable: This product does not contain batteries, even it is exposed to high temperature, there is no risk of burning or explosion.
  • Wide Compitibility: this product compatible with iPhones, iPad, Android Phones, digital cameras, tablets, kindles and many other electronics.
  • High class and beautiful: This product adopts water-repellent fabric, which is resistant to rain splashing and dust. Portable and light weight, is so perfect for camping, hiking, cycling and other outdoor activities.
Solar Panel Charger, Solorage 21W Solar Charger with 2 USB Ports and 3 Foldable Solar Panels Portable Solar Phone Charger for Camping, Hiking Compatible with iPhone, iPad Pro/Air/Mini, Samsung Galaxy
  • ?SMART CHARGING TECHNOLOGY: Built-in intelligent chip and voltage regulator technology that can detects your device then deliver its fastest possible charging speed. Solorage solar power charger ensures safe charging via overcharge, overheat and short circuit protection.
  • ?HIGH ENERGY CONVERSION: 21 watt SunPower folding solar panel is 21.5 percent - 23.5 percent of conversion efficiency, providing the charging speed up to 2.4A per port or 3A overall in enough sunlight.
  • ?PORTABLE: Compact size (10.6 × 6.3× 1.3in folded) and lightweight (21 oz) design make the portable solar panel bag ideal for hiking, camping, fishing or other outdoor activities. It can be easily attached to backpacks, trees or tents with 7 cord hooks.
  • ?DURABLE: Solar panels seam into rugged polyester canvas and industrial-strength PET polymer surface protects it from occasional rain or wet fog.
  • ?WIDE COMPATIBILITY: This solar charger is compatible with almost all the 5V Android devices, cell phone, IOS devices (needs extra apple’s cable), Power Pack, PSP, Digital cameras, Bluetooth headsets etc.
  • Compatible devices: Cellular Phones
Sunnybag SUNBOOSTER | Foldable Solar Charger with 21 Watts | Eco-Friendly Solar Charging on The go | Waterproof and Lightweight | 2 USB Ports | Solar Panel Charger for Hiking, Backpacking, Camping
  • This foldable solar charger consists of 3 panels with 7 watt each. In direct sunlight, the SUNBOOSTER will fully charge a smartphone in 2-3 hours.
  • The SUNBOOSTER solar phone charger has 2 usb ports and generates enough energy to charge 2 devices at the same time.
  • Charge your mobile devices such as smartphone (Apple iPhone, Samsung galaxy, Google Pixel), smartwatch, power bank, tablet, camera or drone with solar energy.
  • The portable solar panel is waterproof, scratch resistant and shockproof. It weighs only 1.4 pounds and is made of SUNPOWER cells with an efficiency of 22.4%.
  • With 21 watts of power the SUNBOOSTER is perfect for outdoor activities like hiking, camping, cycling, climbing, survival training, but also for travel, business and leisure.
  • Thanks to the built-in Auto-restart function, Smartphones and Apple devices (iphone or ipad) can be charged without interruption when moving from a shaded to a sunny area.
  • The Power Indication Color (PIC) shows the current output power and helps you to align the solar panels perfectly towards the sun - for maximum energy yield.
Solar Panel, Anker 21W 2-Port USB Portable Solar Charger with Foldable Panel, PowerPort Solar for iPhone 11/Xs/XS Max/XR/X/8/7, iPad Pro/Air/Mini, Galaxy S9/S8/S7/S6, and More
  • The Anker Advantage: Join the 50 million+ powered by our leading technology
  • Fast Charging Technology: PowerIQ delivers the charging speed up to 2.4 amps per port or 3 amps overall under direct sunlight. 21 watt SunPower solar array is 21.5-23.5% efficient, providing enough power to charge two devices simultaneously
  • Incredibly Durable: Industrial-strength PET polymer faced solar panels sewn into a rugged polyester canvas offer weather-resistant outdoor durability
  • Highly Portable: Compact size (11.1 × 6.3in folded or 26.4 × 11.1in opened) and stainless-steel eye-holes on each corner allow easy attachment to backpacks, trees, or tents. Lightweight and ultra-thin design make it ideal for long treks
  • What You Get: Anker PowerPort Solar (21W 2-Port USB Solar Charger), 3ft Micro USB cable, welcome guide, our fan-favorite 18-month warranty and friendly customer service
Renogy 21W Portable Foldable Solar Panel Charger Water Resistant Cover with Triple USB Ports for Hiking or Traveling, Nylon Kickstand, 21 Watts
  • HIGHLY EFFICIENT: Utilizes sunlight to the maximum extent with premium solar panel and adjustable nylon kickstand
  • EFFORTLESS RECONNECTING: Auto-optimization function guarantees immediate reconnecting when sunlight returns after charging interruption
  • OPTIMIZED CHARGING: Advanced iSolar technology enables the fastest charging speed possible and protects your device from overheating
  • TOP-NOTCH QUALITY: Water-resistant and rugged nylon offers great durability to conquer unpredictable weather conditions
  • PORTABLE SIZE: Foldable design for portability in backpack, tote and suitcase for outdoor activities
Portable Charger Power Bank 30,800mAh LCD Display Power Bank,25W PD Fast Charging +QC 4.0 Quick Phone Charging Power Bank Tri-Outputs Battery Pack Compatible with iPhone,Android etc(Black)
  • 【Super-Fast Charging】portable charger Power bank high capacity The 30,800mAh power bank could charge your phone at least 6-8 times, Suitable for business, travel, going out, you don't have to worry about your phone low battery. [Note:High capacity so the products weight 350g]
  • 【Import Intelligent Controlling IC】 The portable charger adopt Import Intelligent Controlling IC to prevent power bank overcharge, overvoltage, overcurrent and short circuit. [CE certified] make sure product quality is safer.
  • 【3 Output -Charge 3 Devices At Once】Power bank with 3 Output Ports - QC4.0 output, PD output, 2.1A USB output, you can charge 3 devices simultaneously.Power Delivery 4.0 output and Quick Charge 4.0 output combine to deliver an optimized charge to your devices at up to 25W. Compared with non-fast charging power bank, save more than half of the time.
  • The Latest Smart Chip, LCD Digital Screen Design Portable Charger, Leading the Fashion.
  • 【Universal Compatibility LCD display】 portable charger is universally compatible with all products via USB charging cable, including all iOS and Android smartphones, tablets, other devices and so on. LCD display shows current battery charge ,input and output status, no more guessing whether need to charge it or not.
  • 【Full 24 Month Warranty & Worry-Free Purchase】- You will get 30,800mAh power bank external battery pack[Charge your phone 6-8times] , User manual, Micro USB cable [Not include Type C cable], AND 24 month warranty policy and 24 hours friendly customer service.
Nekteck 28W Solar Charger, Portable Solar Panel with 2 USB Port, IPX4 Waterproof Hiking Camping Gear Sunpowered Adapter Compatible with iPhone 12/11/11pro/Xs, iPad, Samsung Galaxy, Camera
  • HIGH CONVERSION EFFICIENCY: Built with highly efficient SunPower Maxeon solar cell that is known to perform better than conventional panels in the market. Nekteck USB solar charger can produce up to 28W which is higher compared to other solar panel chargers
  • DURABLE AND WATER RESISTANT: Highly reliable for outdoor use like hiking, camping and long travels. With its IPX4 waterproof technology, robust canvas surface and stitching the Sunpower solar panel can withstand different weather conditions
  • PROVIDES POWER FOR 2 USB DEVICES: The solar phone charger can simultaneously charge 2USB devices up to 2.4A(5V) max per port or 4.0A (5V) as its maximum charging power. And the solar panel charger is compatible with majority of mobile phones- iPhone series/iPad/Kindle Fire/Galaxy tablets/Galaxy S, GPS, Camera, tablets and other USB devices(USB-A to Lightning Cable is NOT included)
  • FOLDABLE AND LIGHTWEIGHT: The solar panels can be folded (6.3x 11.1x 1.1 inch) and can easily be attached to your backpack or travel bags since it has 2 metal hooks and 5 eyelets.small size panel, When all folded up it takes up the size of a notebook.You can bring USB portable solar charger whenever you’re outside travelling, hiking, fishing or trekking so your devices never run out of power while there is sunlight
  • SMART IC CHIP TECHNOLOGY and SAFETY FEATURE: Nekteck solar charger is built with voltage stabilization and an innovative chip that detects the best or maximum charging requirement of your device so your devices can be charged safely and fast
ALLPOWERS 21W Solar Charger with 10000mAh Power Bank and 3 Fast Charging USB-A/USB-C Ports, IP66 Waterproof Portable Solar Panel for Camping Hiking Compatible with iPhone iPad Samsung Earbuds
  • 【Bulit-in A 10000mAh Battery Bank】With 10000mah high capacity, the solar panel can be use as a portable charger to power 3 times for an iPhone, 2 times for a Samsung and 2 times for a tablet. When it power outage, you can recharge from solar power or wall charge( there’s a micro input port), great for a week-long trip.
  • 【High-Efficieny】The Monocrystalline solar cell allows convert up to 23.5% of solar power into electric energy. PET--A type of thin-film solar material that offers greater flexibility while retaining durability. Three ports are covered with rubber cover to protect them from dust or water damage.
  • 【Fast charging USB Ports】2 USB-A Ports(5V2A to 12V1.5A Automatically adapt to the maximum input of the device to meet your different device needs) and 1 USB-C Port(PD18W input and output) make you free to charge phones, tablets, drone, camera and more in amazing fast speed.
  • 【Foldable and Waterproof】The 12x7.08x0.79 inch (when folded ) small size and 1.67 lbs 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 camping. IPX4 waterproof material allows it use normally in a cloudy day and worry-free.
  • 【What You Get】You will get ALLPOWERS 21W Solar Charger, USB-A to Micro Cable, 2 carabiner, User Manual, 18 Months Warranty and Friendly Customer Service.

What to Consider Before Buying 21W Solar Charger

Even deciding on an insignificant purchase can make you feel like choosing between the red pill or the blue one. But is the headache really worth it? Online shopping was meant to make our experience simpler, easier and enjoyable. But in reality it is quite easy to get confused on the decision which one to buy?.

This is where our efforts come in! This list of 21w solar charger will surely save you valuable time and effort. However another question remains, what makes our compilation the best? Or on what basis you should trust this 21w solar charger list.

Is it virtually possible to know every detail of a product for making a perfect purchase? The answer is definitely NO, it’s not! Then how do you make the correct decision while buying 21w solar charger? Well, the complexity of selecting a single product from a sea of them can be simplified taking into consideration a few key metrics regarding the product.

We feed thousands of data to our AI regarding these products through advanced algorithms. Based on the relevant data i.e. brand, features, specs, ratings and reviews and many others (which are discussed below) a list of best 21w solar charger has been prepared by the AI.

Brand Reputation:

Branded products might seem pricey but the point is they are charging those extra bucks for reliability. Unlike many other things, trust doesn’t come cheap. 8 out of 10 times you can trust a branded one.

Unique Features:

Enough and useful features make a product purchase worthy. This is the basic criteria to be followed.

Useful Specifications:

Matching the right specs according to your need is very important and we miss no important things.

Star Ratings:

Healthy ratings indicate a good product. Highest rated products rarely disappoint users. So, we pick the best rated units on our list.

Number of Reviews:

Higher number of reviews in the shortest period of time shows the product is accepted widely by a lot of customers. Customer feedback aka customer reviews are the most insightful source of judging a product’s merit. We take serious consideration into customer reviews and total numbers while choosing them.

Ratio of Positive Reviews Against Bad:

The final rating is an average of all ratings provided by users. But we can get a deeper look at the product’s performance if we analyze the ratings on each star level.

Ranking of the Seller:

Shows the reputation of the seller. Even if you choose the correct item, a bad seller can be a big hassle. So stare clear of them.

Product Ranking in Relevant Category:

These small little details are never left out of our consideration. This is what makes our selection even more confident and authentic.

Bang for the Buck:

Spending a fortune on 21w solar charger is not a wise thing to do. Our every selected item should provide you the best value for the money you spent.

Selling Growth Over the Product Lifetime:

A product might have thousands of reviews and good ratings, still can be a bad choice. Once hyped products can be an outdated choice now. So, a gradual positive growth of any product indicates its reliability.

Latest Models:

Every product is perfected with every new edition. Those little improvements, upgrades and adjustments come real handy in user experience. So, we keep in mind to choose the latest ones.

Product Availability:

Unavailable product is like a dead lion. Discontinued items are surely not recommended.

Rating By Features:

There is a special segment in amazon where the product is rated according to different relevant features. This one is mostly overlooked by everyone. But we keep a keen eye on this!

Overall Versatility:

A product needs to be versatile and user friendly. Our aim is to prepare a list of best 21w solar charger which will serve you in a wide range.

Amazon’s Preference:

Amazon’s choice can be a factor to consider. It creates a sense of reliability among customers. We value amazon’s choice and prepare all lists keeping this fact in mind.


After reading through all of the reviews and features of the different 21w solar charger, it is clear that there are a lot of great options to choose from. However, the best option for each person will vary depending on their individual needs and preferences. But here, the products we have listed above, have great features and are highly rated by customers. If you are looking for the Best 21W Solar Charger, then any of these 10 would be a great choice for you.

Last update on 2023-01-30 at 01:44 / Affiliate links / Images from Amazon Product Advertising API

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