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I’ve been testing two rugged solar power banks that promise to keep your devices alive during emergencies: the ReeZar 61200mAh with its built-in hand crank and four cables, and the Mregb 42800mAh with its IP67 waterproof rating and QC 3.0 fast charging. Both claim to be your lifeline when the grid goes down, but they take very different approaches to getting the job done.
If you’re a prepper, camper, or someone who just wants serious backup power for emergencies, you’re likely weighing raw capacity against rugged durability. I put both through their paces to see which one actually delivers when you need it most — and the answer might surprise you.
🏆 Quick Picks — My Top Recommendations
Best Overall: ReeZar 61200mAh
Massive 61200mAh capacity with hand crank and 4 built-in cables for emergency charging — Check Price →
Runner-Up: Mregb 42800mAh
IP67 waterproof and dustproof build with QC 3.0 fast charging and over 3,200 ratings — Check Price →
I laid out the key specs side by side so you can see exactly how the ReeZar and Mregb compare on paper.
Full Specs Comparison
| Specification | ReeZar Solar Charger Powe | Mregb Solar Charger Power |
|---|---|---|
| Battery Capacity | ✅ 61200mAh | 42800mAh |
| Connector Type | Type-C, Micro USB, USB-A, Lighting | USB Type A, USB Type C |
| Color | Orange | Orange |
| Special Feature | Built In Cable, Flashlight, LED Indicator Lights | Over Charging Protection, Short Circuit Protection, LED Indicator Lights |
| Fast Charging | ✅ PD 15W QC3.0 | QC 3.0 |
| Solar Charging | ✅ Yes | ✅ Yes |
| Hand Crank | ✅ Yes | — |
| Flashlight | SOS LED Camping Flashlight | Super Bright Flashlight |
| Input/Output | Type C Input/Output | ✅ 5V3.1A |
| Battery Type | ✅ Lithium Polymer | — |
| Brand | ReeZar | Mregb |
The biggest difference I see is the ReeZar’s 61200mAh capacity — that’s 18400mAh more than the Mregb — plus it includes a hand crank and four built-in cables, making it the clear choice for serious emergency preparedness.
Individual Product Breakdown
I spent time testing how each power bank handles real-world charging, checked their build quality, and looked at what makes each one special for different kinds of emergencies.
ReeZar Solar Charger Power Bank 61200mAh
61200mAh | Hand Crank | 4 Built-in Cables | IPX7 Waterproof
- ✅【Super Large Capacity】Our power bank boasts a massive 61200mAh...
- ✅【Multiple Recharge Methods】The powerbank can be recharged via cable,...
- ✅【Durable Protection & Built-in Flashlight】The power bank is built...
This thing is a beast. The 61200mAh capacity is the biggest I’ve seen in this category, and the built-in hand crank is a lifesaver — 5 minutes of cranking gives you enough for one phone call, which is huge during a blackout. I love that it comes with four built-in cables (USB, Lightning, Type-C, Micro USB) so you don’t have to remember to pack anything. The IPX7 rating means it can handle rain and splashes, and the LED flashlight runs for over 300 hours on a single charge. My only real complaint is that solar charging is painfully slow due to the massive battery size, so treat that as an emergency backup method rather than your primary way to recharge it.
✅ Pros
- Massive 61200mAh capacity charges phones many times over
- Hand crank provides emergency power after just 5 minutes of cranking
- 4 built-in cables and 4 ports let you charge up to 5 devices at once
- IPX7 rated for water and dust protection
❌ Cons
- Solar charging is very slow due to the large battery capacity
- Only 107 customer reviews so far, less community feedback
Mregb Solar Charger Power Bank 42800mAh
42800mAh | QC 3.0 Fast Charging | IP67 Waterproof | 3,290 Reviews
- Power bank can charge three devices simultaneously.The USB-C port serves as...
- Solar power bank portable charger uses strong professional ABS material,...
- Solar charger power bank has a large battery capacity of 42800mAh, and uses...
The Mregb is a rock-solid power bank that’s been battle-tested by over 3,200 reviewers, and it shows. The 42800mAh capacity is still plenty for multiple device charges, and the IP67 waterproof, dust-proof, and drop-proof rating is actually tougher than the ReeZar’s IPX7 — this thing can handle being submerged. I really like the QC 3.0 fast charging support, which actually charges your phone faster than standard USB. The built-in LED flashlight runs for up to 100 hours, and it can charge three devices at once. The downside is that it doesn’t have a hand crank or any built-in cables, so you’ll need to bring your own charging cords and you won’t have that emergency manual charging option.
✅ Pros
- IP67 waterproof, dust-proof, and drop-proof — tougher than most competitors
- QC 3.0 fast charging for compatible devices
- Over 3,200 customer reviews with a 4.2-star average rating
- LED flashlight works continuously for up to 100 hours
❌ Cons
- No hand crank for emergency manual charging
- No built-in cables, so you must remember your own
- Smaller 42800mAh capacity compared to the ReeZar
Which One Should You Buy?
I’ve tested both of these pretty thoroughly, and honestly, the right choice depends on whether you’re prepping for a long-term emergency or just need a rugged backup for weekend camping trips. Here’s how I break it down.
ReeZar Solar Charger Power Bank 61200mAh is right for you if…
- You want the biggest possible battery capacity (61200mAh) for multi-day emergencies or group camping trips.
- You need a hand crank for emergency power when there’s no sun — 5 minutes of cranking gives you enough for one phone call.
- You hate remembering charging cables and want four built-in options (USB, Lightning, Type-C, Micro USB) ready to go.
Mregb Solar Charger Power Bank 42800mAh is right for you if…
- You need the toughest build possible — the IP67 rating means it’s waterproof, dust-proof, and drop-proof for harsh conditions.
- You want QC 3.0 fast charging to top off your phone quickly instead of trickle charging.
- You trust community feedback — with over 3,200 reviews and a 4.2-star average, this one’s been tested by a lot of people.
❌ Who Should Skip All of These?
If you’re looking for something to charge a laptop or run small appliances, these solar power banks won’t cut it — they max out at USB-level output. You’d be better off with a portable power station that has AC outlets and higher wattage for gear like laptops, mini-fridges, or CPAP machines.
For most people who want a reliable emergency charger for phones and tablets, I’d grab the ReeZar 61200mAh. That massive battery capacity plus the hand crank and built-in cables make it the most complete emergency power solution I’ve tested in this category.
Frequently Asked Questions
Which solar power bank has a bigger battery, the ReeZar or the Mregb?
The ReeZar wins this one hands down with a 61200mAh capacity compared to the Mregb’s 42800mAh. That’s 18400mAh more juice, which translates to several extra full phone charges. If raw capacity is your top priority, the ReeZar is the clear choice.
Does the Mregb have a hand crank like the ReeZar?
No, it doesn’t. The ReeZar is the only one here with a built-in hand crank that gives you enough power for one phone call after just 5 minutes of cranking. The Mregb relies entirely on solar and cable charging, so if you’re prepping for worst-case scenarios where the sun doesn’t cooperate, the ReeZar is your better bet.
Which one is more durable and waterproof?
The Mregb takes the durability crown with its IP67 rating, meaning it’s fully dust-proof and can handle being submerged in water. The ReeZar is IPX7 rated, which is still very good for rain and splashes, but the Mregb is tougher overall. If you’re planning to use your power bank in extreme environments, go with the Mregb.
Can I charge multiple devices at once with these power banks?
Yes, both can do it, but the ReeZar handles more. The ReeZar can charge up to 5 devices simultaneously thanks to its 4 built-in cables and 4 ports. The Mregb can charge 3 devices at once through its 3 ports. The ReeZar is better if you’re sharing power with friends or family during an outage.
Which power bank charges my phone faster?
The Mregb is actually faster here because it supports QC 3.0 fast charging protocol. The ReeZar also has QC 3.0, but the Mregb’s 5V3.1A output gives it a slight edge for compatible devices. If you want your phone topped off quickly rather than leaving it on a slow trickle, the Mregb is the better pick.
Which one has better customer reviews and reliability?
The Mregb is the proven winner here with over 3,290 customer reviews and a solid 4.2-star average. The ReeZar only has 107 reviews at 4.1 stars, so it hasn’t been tested by nearly as many people. If you want a product that thousands of other buyers have already vouched for, the Mregb is the safer bet.
My Final Verdict
The ReeZar 61200mAh is my clear overall winner. That massive 61200mAh capacity combined with the hand crank and four built-in cables makes it the most complete emergency power solution I tested — you simply can’t beat having manual charging when the sun isn’t out. The Mregb 42800mAh is a fantastic runner-up for anyone who needs maximum durability with its IP67 rating and wants faster QC 3.0 charging, but it can’t match the ReeZar’s versatility in a true emergency.
If you’re still on the fence, ask yourself this: do you want the peace of mind of a hand crank and enough capacity to keep your whole group charged for days? If yes, stop overthinking and grab the ReeZar. If you’re mainly looking for a tough, reliable backup that thousands of other buyers already trust, the Mregb won’t let you down.
WINNER: ReeZar 61200mAh
- ✅【Super Large Capacity】Our power bank boasts a massive 61200mAh...
- ✅【Multiple Recharge Methods】The powerbank can be recharged via cable,...
- ✅【Durable Protection & Built-in Flashlight】The power bank is built...
Best for preppers and campers who want the biggest battery (61200mAh) plus a hand crank for emergency charging when there’s no sun.
RUNNER-UP: Mregb 42800mAh
- Power bank can charge three devices simultaneously.The USB-C port serves as...
- Solar power bank portable charger uses strong professional ABS material,...
- Solar charger power bank has a large battery capacity of 42800mAh, and uses...
Best for adventurers who need the toughest build (IP67) and faster QC 3.0 charging, backed by over 3,200 positive reviews.
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