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OEUUDD 25000mAh Review

Where this device lacks in its ability as a solar charger, it makes up for as an affordable battery pack
oeuudd 25000mah solar charger review
Credit: OEUUDD
Top Pick Award
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Price:  $42 List
Pros:  Large battery capacity, LED back panel
Cons:  The small solar panel makes charging hard
Manufacturer:   OEUUDD
By James Lucas ⋅ Review Editor  ⋅  Nov 4, 2022
Our Editors independently research, test, and rate the best products. We only make money if you purchase a product through our links, and we never accept free products from manufacturers. Learn more
31
OVERALL
SCORE


RANKED
#7 of 10
  • Direct Solar Charging Speed - 35% 1.0
  • Indirect Solar Charging Speed - 35% 1.5
  • Portability - 15% 7.5
  • Multiple Device Charging - 15% 7.5

Our Verdict

The OEUUDD 25000mAh takes the top pick for its ability as a battery pack. Note that the emphasis is on the battery pack. This device has a large battery capacity and can charge three devices from its USB outlets. The 25,000 mAh allows for multiple charges at an affordable price. The bright 36 light LED back panel provides an amazing light when camping or moving around at night while also being a manageable size for carrying around. However, the small solar panel did little to charge the battery so don't expect much performance from the solar charging. For those looking for a portable charging station for their devices while out camping or in rugged terrain, the OEUUDD 25000mAh provides.

Compare to Similar Products

 
oeuudd 25000mah solar charger review
This Product
OEUUDD 25000mAh
Awards Top Pick Award Editors' Choice Award Best Buy Award   
Price $42 List$100 List
$72.96 at Amazon
$65 List
$64.98 at Amazon
$24 List
$14.95 at Amazon
$45 List
$26.99 at Amazon
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Pros Large battery capacity, LED back panelInexpensive, efficient, user-friendly, great charging speed, excels in partly cloudy conditionsGood charging speed, lots of places to clip carabiners, highly affordableSmall, can fit in your pocket, Has a LED lightLightweight, durable, lots of charging options
Cons The small solar panel makes charging hardBulky, lacks portability, and the storage pouch is only semi-secureHard to reach pouch makes the panel lay crooked, just a solar panel with no battery pack,The small solar panel doesn't chargeA bit bulky, slow charging speeds considering battery capacity
Bottom Line Where this device lacks in its ability as a solar charger, it makes up for as an affordable battery packThis speedy solar charger handles multiple devices and offers reliability at a reasonable priceThis low-priced, incredibly efficient solar panel converts the sun into charges while saving on costsMore 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 OEUUDD 25000mAh BigBlue 3 X-Dragon 20W Dizaul 5000mAh Port... Blavor Qi 10,000 mAh
Direct Solar Charging Speed (35%)
1
8.0
8.0
1
1
Indirect Solar Charging Speed (35%)
1.5
10.0
8.5
1
1
Portability (15%)
7.5
5.5
5.5
10.0
9.5
Multiple Device Charging (15%)
7.5
9.5
7.5
5.5
1
Specs OEUUDD 25000mAh BigBlue 3 X-Dragon 20W Dizaul 5000mAh Port... Blavor Qi 10,000 mAh
Panel Size (watts) Power Output? <5W 28W 20W <5W <5W
Weight (measured) 18.6oz 21.8oz 21.1oz 4.8oz 9.3oz
# of USB outlets 3 3 2 2 2
Max USB Output Current (amps per port) 2 amp 2.4 amp 3 amp 1 amp 2 amp
Size folded N/A 11.1" x 6.3" x 1.3" 12.1" x 7.2" x .51" N/A N/A
Size opened 7" x 3.75" x 1.25" 33.1" x 11.1" x 0.2" 23.3" x 12.1" x .12" 5.59" x 2.76" x 0.55" 6" x 3" x 0.5"
Battery? Yes No No Yes Yes
Charge capacity (mAh) 25,000mAh N/A N/A 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 PET Polymer Fabric PTFE Plastic case PET Polymer Fabric
Panel type Mono-crystalline Mono-crystalline Mono-crystalline Mono-crystalline Mono-crystalline
Battery input (Volts / Amps) 5V/2A N/A N/A 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

This battery pack with a small solar panel offers outdoor enthusiasts a chance to plug in while outdoors by offering three USB ports and strong charging speeds. Relying on the device solely as a solar-powered charger would be difficult but the fully charged battery pack makes it an invaluable asset. The device is a bit bulky for bringing on backcountry excursions but the OEUUDD 25000mAh proved to be the best battery pack/solar combo. With its reasonable price tag and overall solid capabilities, the OEUUDD 25000mAh earned our Best Buy Award this season.

Performance Comparison


oeuudd 25000mah solar charger review
Credit: OEUUDD

Direct Solar Charging Speed


This device's solar panel acts more as a backup than the main feature and so it had a minimal performance with the solar charging speed. The 1.5-watt solar panel catches some sunlight but only gained a 4.2% charge, about 210 mAh during our testing. Plugging in the device with a USB cable will provide a faster and more reliable charge. Think of this device as a battery pack with the addition of a solar panel rather than a solar charger alone. Charging it directly through the micro USB takes about 12 hours with the 5v charger.


Consider the solar panel as an emergency power source for this charger and less of a reliable source of energy. Just for fun, we tested how long it would take the OEUUDD to charge when fully reliant on solar. Turns out, it took over two hours for the battery pack to charge from 25% to 50%. This is slow and steady progress but is surprisingly efficient for such a large battery. Compared to other battery packs we've tested, this is actually a fairly impressive charging rate. Though not nearly as reliable as a traditional solar charger with a capacity of 10W or more, the OEUUDD is still fully functional. Plus, its large capacity battery means that you'll be able to get a fair number of charges out of the battery pack, even without relying on the sun.

oeuudd 25000mah solar charger review - the oeuudd is a convenient portable size.
The OEUUDD is a convenient portable size.
Credit: Abriah Wofford

Indirect Charging Speed


Again, the small solar panel on this device makes the energy from the sun more of an emergency backup than a reliable way to put juice back into your phone or USB device. In full cloud coverage, the device only received a 1.1% charge while in the partial sun it received a 3.2% charge, making it less than ideal under cloudy conditions. If only relying on solar, the panel has such a small capacity that it will not be able to reliably charge a device in marginal conditions. When the OEUUDD was at least partially charged and left out, it was able to consistently deliver charge to our electronics through interruptions due to shading. If the battery in this device dies, then it's best to charge it with one of its many USB ports instead of relying on the sun.


oeuudd 25000mah solar charger review
Credit: Abriah Wofford

Portability


The solid size of this charger makes it easily portable. At 7.13" x 4.88" x 1.25" and 18.6 ounces, this device can be moved around and packed into a car or backpack with little hassle. Made from ABS and PC Silicone material, this IP65 waterproof, dustproof, and shockproof charger can withstand heavy wear and tear. Though our testers commented that it felt like a brick. It is a bit bulkier than we'd like, which made it hard to warrant bringing along on longer backcountry excursions.

The compact device has a small loop that the included carabiner can be clipped into. While it lacks a stand, the charger can easily be propped up on its own or hung by the carabiner. This allows the charger to be hung from a tent ceiling, a tree, or inside of a car while camping. Of note is the 36 LED light on the battery which comes with various lighting levels. The long press power button keeps the lights off and stops them from draining the battery. This makes it ideal for the outdoors as it can light the area while still charging devices.

In terms of portability, this charger compared well to the other models in the review.


oeuudd 25000mah solar charger review
Credit: Abriah Wofford

Multiple Device Charging


With three USB ports, this solar charger gives options for users who need to plug in a tablet and multiple phones. The 25,000mAh capacity allows it to deliver charge to small devices at the same rate as a household plug. Though the charging rates diminish with multiple devices plugged in from 1209 mAh in the first port to 841 mAh in the second port. The OEUUDD 25000mAh charged a smaller battery pack and our cell phone simultaneously without much trouble. Our phone charged 12% over a thirty-minute test cycle; this is less than the battery performed when only charging a single device but much more impressive than a standard solar-only panel. The 25,000 mAh battery makes it a go-to as a charging station.


oeuudd 25000mah solar charger review
Credit: Abriah Wofford

Should You Buy The OEUUDD 25000mAh?


This inexpensive solar charger offers a great charge-to-dollar ratio. The relatively low cost to power up multiple USB devices makes it a solid choice in the field. The solar panel underperformed and acted as a mere emergency backup but the battery power makes up for it with its 25,000 mAh. Its durable casing and waterproofing provide insurance against damage and prolong the life of this already hearty model. The OEUUDD 25000mAh is certainly a battery back first and foremost, and a solar panel second. But, compared to similar-capacity battery packs sold online, it holds its own in terms of price; adding in the solar option and the OEUUDD 25000mAh suddenly seems like an incredibly good deal.

oeuudd 25000mah solar charger review
Credit: Abriah Wofford

What Other Solar Chargers Should You Consider?


This durable, portable battery pack provides a ton of power for multiple devices. It is worth noting that the OEUUDD 25000mAh should be partially or fully charged to deliver consistent power to your devices. Being fully reliant on solar power alone will cause problems with this device. as it takes a long time for it to be charged. Its dimensions are small and it isn't overly heavy, though due to its weight, it's not the best option for backpacking. The pros outweigh the cons so-to-speak, especially when considering the price of this product. For those looking for a charger, the OEUUDD 25000mAh will power up your USB devices without zapping your wallet, making it a great option.

This came in as our top pick for a battery pack but if you're looking for another similar charger, check out the BEARTWO 10,000mAh which is a little less expensive.

James Lucas
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