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Ryno-Tuff 21W Review

A powerful, fast charging machine, capable of charging multiple devices, complete with a reasonable price tag
ryno-tuff 21w solar charger review
Credit: Amazon
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Price:  $63 List | $62.99 at Amazon
Pros:  Impressive charging speeds, can charge multiple devices simultaneously, affordable
Cons:  Poor interruption recovery
Manufacturer:   Ryno-Tuff
By James Lucas and Matt Spencer  ⋅  Nov 4, 2022
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73
OVERALL
SCORE


RANKED
#4 of 10
  • Direct Solar Charging Speed - 35% 8.0
  • Indirect Solar Charging Speed - 35% 6.5
  • Portability - 15% 6.5
  • Multiple Device Charging - 15% 8.0

Our Verdict

The Ryno-Tuff is a powerful 21W panel; it had some of the most impressive results in our charging speed tests. It is not only highly efficient but also very durable, making it a solid all-around panel. As a bonus, it's also very affordable, especially considering its exceptional across-the-board performance. Its excellent performance makes it our go-to for an affordable, efficient model. Not only that, but it can successfully charge multiple devices at once, making it one of our favorite panels in the review.

Compare to Similar Products

 
ryno-tuff 21w solar charger review
This Product
Ryno-Tuff 21W
Awards  Best Buy Award Top Pick Award   
Price $63 List
$62.99 at Amazon
$65 List
$64.98 at Amazon
Check Price at Amazon$24 List
$14.95 at Amazon
$45 List
$26.99 at Amazon
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Pros Impressive charging speeds, can charge multiple devices simultaneously, affordableGood charging speed, lots of places to clip carabiners, highly affordableLarge battery capacity, LED back panelSmall, can fit in your pocket, Has a LED lightLightweight, durable, lots of charging options
Cons Poor interruption recoveryHard to reach pouch makes the panel lay crooked, just a solar panel with no battery pack,The small solar panel makes charging hardThe small solar panel doesn't chargeA bit bulky, slow charging speeds considering battery capacity
Bottom Line A powerful, fast charging machine, capable of charging multiple devices, complete with a reasonable price tagThis low-priced, incredibly efficient solar panel converts the sun into charges while saving on costsWhere this device lacks in its ability as a solar charger, it makes up for as an affordable battery packMore charger than a solar panel, this pocket-sized device will provide some charge for your electronics at a decent priceA relatively lightweight battery pack with multiple charging options, this small model has a USB-C and wireless charging port
Rating Categories Ryno-Tuff 21W X-Dragon 20W OEUUDD 25000mAh Dizaul 5000mAh Port... Blavor Qi 10,000 mAh
Direct Solar Charging Speed (35%)
8.0
8.0
1
1
1
Indirect Solar Charging Speed (35%)
6.5
8.5
1.5
1
1
Portability (15%)
6.5
5.5
7.5
10.0
9.5
Multiple Device Charging (15%)
8.0
7.5
7.5
5.5
1
Specs Ryno-Tuff 21W X-Dragon 20W OEUUDD 25000mAh Dizaul 5000mAh Port... Blavor Qi 10,000 mAh
Panel Size (watts) Power Output? 21W 20W <5W <5W <5W
Weight (measured) 17.5oz 21.1oz 18.6oz 4.8oz 9.3oz
# of USB outlets 2 2 3 2 2
Max USB Output Current (amps per port) 2.1 amp 3 amp 2 amp 1 amp 2 amp
Size folded 5.9" x 11.8" x 0.8" 12.1" x 7.2" x .51" N/A N/A N/A
Size opened 18" x 11.8" x 0.1" 23.3" x 12.1" x .12" 7" x 3.75" x 1.25" 5.59" x 2.76" x 0.55" 6" x 3" x 0.5"
Battery? No No Yes Yes Yes
Charge capacity (mAh) N/A N/A 25,000mAh 5,000mAh 10,000mAh
Charge tablet? Yes Yes Yes Yes Yes
Charge laptop? No No No No No
Charge iPhone/Smartphone Yes Yes Yes Yes Yes
Panel outside material PET Polymer Fabric PTFE PET Polymer Fabric Plastic case PET Polymer Fabric
Panel type Mono-crystalline Mono-crystalline Mono-crystalline Mono-crystalline Mono-crystalline
Battery input (Volts / Amps) N/A N/A 5V/2A 5V/1A 5V/2.1A
Direct USB Plug? Yes Yes Yes Yes Yes
Daisy Chain? No No No No No
12-Volt connection No No No No No
DC Output No No No No No

Our Analysis and Test Results

With high scores in charging speed and multiple device charging abilities, this panel is an all-around charging machine, especially considering its somewhat humble capacity. We were impressed to see this panel performing alongside panels that have 10W more output power — our results go to show that the claimed wattage on a panel has to be taken with a grain of salt.

Performance Comparison


ryno-tuff 21w solar charger review - the ryno-tuff 21w panel was surprisingly one of the fastest chargers...
The Ryno-Tuff 21W panel was surprisingly one of the fastest chargers out there.
Credit: Jane Jackson

Direct Solar Charging Speed


We were fairly blown away when we first plugged our phone in to measure the Ryno-Tuff's overall charging abilities. This panel is a serious workhorse; we had to keep double-checking to make sure it was truly only a 21-watt panel, as the results reflected those of a much more powerful panel. Our first test was done with a Google Pixel. The Ryno-Tuff charged our phone 34% within the first 30 minutes of our test period. This is on par with panels that have double the claimed wattage, which truly impressed us. That's over a percentage point per minute!


Perhaps it is solar technology improving vastly over the years, or maybe it is just this particular brand, but the Ryno-Tuff delivered a light-speed charge, while still maintaining a reasonable size and price tag — needless to say, we are impressed.

ryno-tuff 21w solar charger review - when it comes to charging speed, the ryno-tuff knocks it out of the...
When it comes to charging speed, the Ryno-Tuff knocks it out of the park.
Credit: Jane Jackson

Indirect Solar Charging Speed



When it experienced intermittent periods of shade and sun, the Ryno-Tuff ended up having to re-initiate charge over and over again, causing our phone to vibrate incessantly. This was not only annoying but also meant that the panel didn't charge that well during this test. The level of charge delivered to our Pixel decreased significantly from our simple charging speed tests, where this panel scored very high.


During this test period, our phone charged only 20% as compared to 34% when placed in full sun for the same amount of time. Our reasoning for the less-than-ideal results in this metric is that the panel lacks the surface area of some of the larger capacity models. This surface area is key in marginal conditions because the bigger the panel, the higher chance there is that the unit is bringing in a charge from the sun. With only three sections of solar cells, the Ryno-Tuff just doesn't have the same level of exposure that a larger panel does.

ryno-tuff 21w solar charger review - this panel is not the best at recovering after an interruption...
This panel is not the best at recovering after an interruption, which may be due to its relatively small capacity.
Credit: Jane Jackson

Multiple Device Charging Speed


With its impressive charging speeds in the single-device category, it is no surprise that the Ryno-Tuff* knocked it out of the park in this metric. When charging an iPhone and a Google Pixel simultaneously, this panel charged each device a fair bit over the course of 30 minutes. The iPhone's battery increased 22% while the Pixel charged 14% over the same period. This is astounding when the overall output of the panel is taken into consideration. With only 21W of power, this little powerhouse charged multiple devices better than some panels with twice the wattage.

ryno-tuff 21w solar charger review - the ryno-tuff has two usb ports and was able to successfully charge...
The Ryno-Tuff has two USB ports and was able to successfully charge two devices at once.
Credit: Jane Jackson

Portability


Weighing in at just over a pound, the Ryno-Tuff is average in terms of weight and size. There is nothing particularly remarkable about this panel's weight, but it is not excessively heavy either. Our measured weight for this product is 17 ounces, or one pound one ounce. In comparison to panels with similar results in our charging speed tests, this panel is actually fairly lightweight. It packs a heavy punch in performance, alongside a reasonable weight, making it a great option to bring on a luxury backpacking trip.

ryno-tuff 21w solar charger review - the ryno-tuff is fairly compact, though we were a bit disappointed...
The Ryno-Tuff is fairly compact, though we were a bit disappointed to find that the pocket doesn't fit a phone.
Credit: Jane Jackson

Should You Buy The Ryno-Tuff 21W?


This panel is all about bang for the buck. The Ryno-Tuff is highly efficient, performs to high standards, and carries an excellent price tag. Though there are less costly products in our review, we've identified it as the best price for the best performance. The Ryno-Tuff gets the job done and charges devices with ease. It comes in a tight package that is durable and built to last, and it excels in the charging speed metric. This, combined with a fair price, make the Ryno-Tuff our go-to for affordable performance.

What Other Solar Chargers Should You Consider?


This panel is an easy-to-use, fast charger — all in a portable package. These factors alone make the Ryno-Tuff one of our favorite options in our fleet, and its reasonable price tag is just icing on the cake.

Though just a little more expensive, we liked the X-Dragon 20W SunPower more as it charged a bit better in indirect light.

James Lucas and Matt Spencer
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