If you spend a lot of time outdoors or just want a backup for travel, finding a power bank that holds up to abuse and keeps your devices running is a real challenge. The Mregb solar power bank has a big battery, a tough shell, and a few extras that could come in handy when you least expect it. It’s made to handle a variety of devices and can juice up more than one gadget at once.
- (Upgraded USB-C Output，Type-C ports support input/output)The Solar Portable Charger Compatible with most devices:Built-in 2 USB Outputs with 5V/3.1A fast charge, support QC 3.0 protocol. Able to fully charge the device quickly. It allows charger 3 Devices at the same time.Built-in smart transformer chip, compatible with most devices on the market such as iphone, ipad, Samsung, HTC, LG and other Android phones.As long as there is a suitable cable, it can also charge other devices such as watches, headsets, GPS, Gopro Camera,etc.
- The solar charger comes with a high-precision compass: Own comes with a portable compass, a handy tool for outdoor activities, like camping, cycling, fishing, traveling, hiking and beaches.
- Solar Charger: Solar power bank can recharge through by the outlet or the sunlight. It normally takes solar charging feature as an emergency purpose, rather than the main power source. The small panel size, large capacity and uncontrollable sunlight intensity, it is difficult to produce high intensity power from the sunlight resource.It is recommended to use a charger above 5V2A to charge the power bank in daily life.
Some folks like its rugged design, built-in flashlight, and the peace of mind it brings during blackouts or camping trips. But let’s be honest—solar charging is slow, and you’ll probably only use it in a pinch. The advertised battery size is impressive, though a few buyers feel the actual performance falls short.
Bottom Line
The Mregb solar power bank is tough and versatile, best suited for outdoor adventures or emergencies. Plug it in for daily charging, and treat the solar panel as a backup.
Click here to view the Mregb Solar Power Bank on Amazon
Overview of Power Bank, Solar Charger, 36800mAh 5V3.1A QC 3.0 Dual 2 USB Port Built-In Powerful Flashlight IPX7 Waterproof Dustproof Shockproof (Orange)
This thing’s built for rough handling, with both wired and solar charging (though solar is more of a last resort due to its snail’s pace). The high-capacity battery lets you charge several devices at once—handy if you’re off the grid for a while.
Its case shrugs off water, dust, and drops. The flashlight and compass are nice touches for campers or travelers.
Pros:
- Charges up to three devices at a time
- Tough, water-resistant build
- Flashlight and compass included
Cons:
- Solar charging is slow
- Bulkier than most pocket chargers
- Real-world capacity might not match the label
High Capacity and Battery Life
With a hefty battery inside, this power bank is built to charge your stuff a few times before it needs a refill. It’s a solid pick for phones, tablets, and smaller electronics when you’re away from outlets for a while.
Big batteries are great, but they take longer to recharge. The solar panel is there if you’re desperate, but it’s really just a backup option.
Pros:
- Multiple charges per fill-up
- Good for longer trips off the grid
Cons:
- Takes a while to recharge
- Solar is only for emergencies
Multi-Device Fast Charging
Charging more than one device at once usually means things slow down, but this power bank lets you plug in three devices without a big speed drop.
You get dual USB outputs and a USB-C port that works both ways. Fast charge support is there for phones, tablets, and even things like headphones or cameras.
Pros:
- Handles several devices at the same time
- Charging speeds are decent
Cons:
- Speed depends on your cables and devices
- Battery drains faster if you charge a bunch at once
If you’re always carrying a phone, tablet, and something else, the multi-device feature is a real plus.
Solar Charging Functionality
The built-in solar panel is a cool idea, but don’t expect miracles. Users mention it can take days in good sunlight to fill the battery.
The panel is small, and the battery is big, so you’re not getting a full charge from the sun unless you’re really patient. Realistically, it’s for keeping a little juice in the bank, not recharging it from zero.
Pros:
- Emergency power when you’re truly stuck
- Handy if you’re outside and have no outlets
Cons:
- Solar charging is slow
- Relies on strong sunlight
Just plug it into a wall if you can—solar is for backup, not daily use.
Durability and Outdoor Readiness
The rugged shell isn’t just for looks; it’s built to take a beating. Waterproof, dustproof, and shock-resistant, so you don’t have to baby it during hikes or camping.
People say it stands up to drops and bad weather. The solar panel is a nice backup, but again, don’t count on it for quick charges.
Pros:
- Water, dust, and impact resistant
- Built for the outdoors
Cons:
- Solar charging is painfully slow
- It’s not exactly lightweight
Integrated LED Flashlight and Compass
The LED flashlight is practical for seeing where you’re going at night or rummaging through your tent. You turn it on by holding the power button, and it’s bright enough for close-up work—not going to replace your heavy-duty torch, though.
The compass is basic but could help you get your bearings. Still, if you’re serious about navigation, bring a real compass or GPS.
Pros:
- Flashlight and compass are useful extras
- Simple controls
Cons:
- Flashlight isn’t super bright
- Compass can be a bit iffy depending on how you hold it
User Experience and Portability
It’s got a built-in hook and comes with a carabiner, so clipping it to your bag is easy. That’s a plus for hikers or anyone with their hands full.
The tough build is great for the outdoors, but the big battery means it’s heavier than most. If you want something featherlight, this isn’t it.
Portability highlights:
- Attachment: Hook and carabiner for hands-free carry
- Durability: IPX7 waterproof, dustproof, shockproof
- Trade-off: More power = more weight
Solar charging is a nice fallback, but if you need a quick top-up, stick with an outlet.
Pros and Cons
This solar power bank’s got plenty going for it, but there are some caveats. Here’s how it shakes out:
Pros
- Multiple Charging Options – USB-C and USB-A outputs, up to three devices at once
- High Capacity Battery – Several phone charges before needing a refill
- Durability – Water, dust, and shock resistant
- Extra Features – Flashlight and compass included
- Versatility – Works with phones, cameras, GPS, and more
| Feature | Benefit |
|---|---|
| USB-C + USB-A Ports | Flexible charging for various devices |
| IPX7 Waterproof | Protection in wet conditions |
| Integrated Flashlight | Useful for low-light environments |
Cons
- Slow Solar Charging – Only practical for emergencies
- Size and Weight – Bigger and heavier than your average charger
- Capacity Discrepancies – Some say it doesn’t live up to the claimed mAh
- Airline Restrictions – Might be too big for some flights
- Mixed Solar Performance – Depends a lot on sunlight
| Issue | Impact |
|---|---|
| Long Solar Charge Time | Not practical as a main charging method |
| Bulkier Design | Less pocket-friendly |
| Reported Capacity Variance | May not meet all expectations |
If you want something for camping or as a backup, it makes sense. For daily pocket carry? Maybe not.
Customer Reviews
Buyers are a mixed bunch. Some love the ruggedness, water resistance, and the fact that it keeps their stuff charged on the go. The flashlight gets a thumbs-up for being handy and reasonably bright.
Others are underwhelmed by the solar feature—it’s just slow, sometimes taking days to fill up. There’s also some grumbling about battery capacity not matching what’s on the box.
Common positives:
- Tough, weather-resistant
- Flashlight is useful for emergencies
- Reliable as a backup power source
Common negatives:
- Solar charging is really slow
- Bulkier than most power banks
- Battery may not last as long as advertised
Frequently Asked Questions
How long does it take to fully charge the 36800mAh power bank using solar power?
Honestly, charging this thing by sunlight alone is going to take days—literally. The solar panel is more for topping off in a pinch than for full recharges.
What devices are compatible with the 5V3.1A QC 3.0 Dual 2 USB Port Power Bank?
It’ll work with pretty much any USB-powered device: smartphones, tablets, GPS, cameras, headphones. Just make sure you’ve got the right cable.
Can the power bank’s flashlight function in extreme weather conditions?
The flashlight is built into a tough, weather-resistant shell. It’ll handle rain, dust, and a few bumps, but extreme cold or long dunks in water might be pushing it.
Is the power bank’s IPX7 rating indicative of its ability to be submerged in water?
IPX7 means it can handle being dropped in up to a meter of water for half an hour. That’s for accidents, not swimming with it.
| IPX7 Rating | Meaning |
|---|---|
| Water-resistant | Yes |
| Submersible | Up to 1m for 30 min |
| Continuous underwater use | Not advised |
What are the safety features of the power bank to prevent overcharging and short circuits?
This power bank’s got some built-in safeguards—things like overcharge and short circuit protection, plus a few other electrical safety tricks. They’re there to keep both the power bank and your gadgets out of trouble. Best part? You don’t have to mess with any settings; it all just works in the background.
How does the solar charging efficiency of the power bank compare to traditional charging methods?
Solar charging just doesn’t keep up with a wall outlet or USB-C input—it’s noticeably slower. If you’ve got access to a high-output wall charger, you’ll be back to full power way faster, so that’s really the way to go for everyday use. Solar’s more of a last resort, honestly, for those times when you’re off the grid and don’t have another option.
Would you like me to add a Pros and Cons section after this FAQ to round out the review?
