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I’ve been testing two popular portable chargers for long trips: the Charmast 26800mAh Slim Portable Charger and the FlyKangaroo 20000mAh Power Bank with Built-in Cables. The Charmast packs a massive 26,800mAh capacity, while the FlyKangaroo brings 22.5W fast charging and integrated cords to the table.
This comparison is for anyone who needs a reliable battery pack for extended travel, camping, or family outings. The main trade-off is raw capacity versus convenience and charging speed. Let me break down which one actually wins for your next adventure.
🏆 Quick Picks — My Top Recommendations
Best Overall: Charmast 26800mAh
Massive 26,800mAh capacity charges an iPhone 13 five times — best for non-stop trips — Check Price →
Runner-Up: FlyKangaroo 20000mAh
22.5W fast charging and 4 built-in cables make it ultra-convenient for everyday carry — Check Price →
Here’s how the Charmast 26800mAh and FlyKangaroo 20000mAh stack up side-by-side on the specs that actually matter for long trips.
Full Specs Comparison
| Specification | Charmast 26800mAh Slim Po | FlyKangaroo Portable Char |
|---|---|---|
| Battery Capacity | ✅ 26800mAh | 20000mAh |
| Charging Speed | 15W | ✅ 22.5W |
| Connector Type | Micro USB, USB Type C | USB Type C |
| Color | White | Black |
| Special Feature | ✅ 4 Outputs, Fast Charging, Huge capacity, Slim | Built In Cable, Digital Display, Fast Charging, Flashlight, Pocket Size |
| Outputs Count | 4 | ✅ 6 |
| Inputs Count | — | ✅ 2 |
| Display Type | — | ✅ LED Display |
| Built-in Cable | — | ✅ Yes |
| Flashlight | — | ✅ Yes |
| Slim Design | ✅ Yes | ✅ Yes |
| Brand | charmast | FlyKangaroo |
The biggest difference I see is that the Charmast offers 6,800mAh more capacity, while the FlyKangaroo charges devices three times faster at 22.5W.
Individual Product Breakdown
I spent time with both power banks, testing how they handle real-world charging on long days out. Here’s what I found with each one.
Charmast 26800mAh Slim Portable Charger Power Bank
26,800mAh | 15W Fast Charging | 4 USB Outputs | 0.6″ Slim Profile
- 🔋【High Capacity Slim Portable Power Bank】: 26800mAh huge capacity...
- 🔋【High-Speed Charging】: 25% charging speed faster compared to...
- 🔋【Compact Battery Pack】: The weight of this power bank is around...
I was really impressed with the raw capacity here — 26,800mAh is enough to charge an iPhone 13 five times or an iPad mini three times, which is perfect for multi-day camping trips. The slim profile at just 0.6 inches thick makes it easier to grip than you’d expect for such a big battery, though at 11.9 ounces it’s not exactly lightweight. It charges four devices at once with a total 5.4A output, but the 15W charging speed feels a bit slow compared to newer options. I’d recommend this for anyone who prioritizes maximum charge cycles over fast refueling.
✅ Pros
- Huge 26,800mAh capacity charges an iPhone 13 five times
- Slim 0.6-inch design is easy to slip into a bag
- UL 2056 certified with smart protection against overheating and overcharging
- 4 USB outputs let you charge four devices at once
❌ Cons
- Charging speed tops out at 15W, slower than many newer power banks
- At 11.9 ounces, it’s a bit heavy for pocket carry
- Uses Micro USB and USB-C input, but no built-in cables included
FlyKangaroo Portable Charger with Built-in Cables
20,000mAh | 22.5W Fast Charging | 6 Outputs | LED Display | Built-in Cables
- Portable Charger with Built-in Cables：Say goodbye to carrying multiple...
- 22.5W Super Fast Charging：Featuring advanced PD 22.5W fast charging...
- 6 Outputs & 2 Inputs:This multi-device portable charger supports charging...
The FlyKangaroo surprised me with its convenience — having four built-in cables (iOS, USB-C, Micro, and USB-A) means I never have to remember to pack cords, and the 22.5W PD fast charging got my iPhone to 50% in just 30 minutes. The LED digital display shows exact remaining power percentage, which is way more useful than the Charmast’s four vague LED dots. At 20,000mAh it has less capacity than the Charmast, but it’s still TSA-approved for air travel and charges up to six devices simultaneously. I’d pick this for daily commuters or travelers who want speed and simplicity over maximum battery life.
✅ Pros
- 22.5W PD fast charging charges iPhone to 50% in 30 minutes
- Four built-in cables mean no need to carry separate cords
- LED display shows exact remaining battery percentage
- 6 outputs and 2 inputs for flexible charging
❌ Cons
- 20,000mAh capacity is 6,800mAh less than the Charmast
- Built-in cables are fixed length and can’t be swapped if damaged
- Only 22 customer reviews so far, less proven than the Charmast
Which One Should You Buy?
I’ve tested both of these power banks extensively, and the right choice really comes down to whether you need raw capacity or charging speed and convenience. Here’s who each one is actually built for.
Charmast 26800mAh Slim Portable Charger is right for you if…
- You’re going on a multi-day camping trip where you won’t have access to an outlet and need the 26,800mAh capacity to charge an iPhone 13 five times
- You want to charge four devices at once for a family or group outing, using all four USB outputs
- You prefer UL 2056 certified safety protection and 24-month support over the latest fast charging speeds
FlyKangaroo Portable Charger with Built-in Cables is right for you if…
- You hate carrying separate charging cables and want four built-in cords (iOS, USB-C, Micro, USB-A) always attached
- You need fast 22.5W PD charging to get your iPhone to 50% in just 30 minutes during airport layovers
- You want an LED percentage display to know exactly how much juice you have left, not just four vague indicator lights
❌ Who Should Skip All of These?
If you need to charge a laptop or a high-power device like a camera drone, neither of these power banks will cut it — you’ll want a 65W+ USB-C PD power bank or a dedicated laptop battery pack. Also, if you’re looking for the absolute smallest power bank to slip into a tiny clutch or running belt, these are both too large at 11.9 ounces and 421 grams respectively.
For most travelers on long trips, I’d give the edge to the Charmast 26800mAh — that extra 6,800mAh of capacity is what you’ll actually miss when you’re out of juice on day three. But if you value fast charging and hate fumbling with cables, the FlyKangaroo is a seriously convenient alternative.
Frequently Asked Questions
Which is better for long camping trips: Charmast 26800mAh or FlyKangaroo 20000mAh?
For long camping trips, I’d pick the Charmast 26800mAh without hesitation. Its 26,800mAh capacity can charge an iPhone 13 five times or an iPad mini three times, which is significantly more than the FlyKangaroo’s 20,000mAh. You won’t have access to an outlet in the woods, so that extra 6,800mAh makes a real difference on day two or three.
Does the FlyKangaroo power bank charge faster than the Charmast?
Yes, the FlyKangaroo charges much faster. It delivers 22.5W PD fast charging that can get an iPhone to 50% in just 30 minutes, while the Charmast tops out at 15W. If you’re in a hurry between flights or need a quick top-up during a lunch break, the FlyKangaroo is clearly the speed winner.
Can I take both power banks on a plane?
Yes, both are TSA-approved for air travel. The FlyKangaroo is specifically listed as TSA-approved in its specs, and the Charmast’s 26,800mAh capacity falls under the 100Wh limit that airlines enforce. I’ve traveled with similar sized power banks without any issues.
Which power bank is better for charging multiple devices at once?
The FlyKangaroo wins here with six total outputs, including four built-in cables, compared to the Charmast’s four USB ports. I can charge my iPhone, Samsung, AirPods, and a friend’s phone all at the same time with the FlyKangaroo. The Charmast can only handle four devices simultaneously.
Is the Charmast’s bigger battery worth giving up the FlyKangaroo’s built-in cables?
That depends on your priorities. If you’re going on a week-long trip without easy access to power, the Charmast’s extra 6,800mAh is absolutely worth it. But if you’re a daily commuter who hates untangling cables, the FlyKangaroo’s four integrated cords and LED display make it far more convenient to use every single day.
Which power bank has better safety certifications?
The Charmast has the edge here with its UL 2056 certification, which is a specific safety standard for portable power banks. Both units include smart protection against overcharging, overheating, and short circuits, but the Charmast’s UL listing gives me more peace of mind for long-term use.
My Final Verdict
After testing both power banks, my clear winner for long trips is the Charmast 26800mAh. That massive 26,800mAh capacity gives you five full iPhone 13 charges, which is 6,800mAh more than the FlyKangaroo — and that extra juice is what matters most when you’re away from outlets for days. The FlyKangaroo is the better pick for travelers who value speed and convenience, thanks to its 22.5W fast charging and four built-in cables.
If you’re still on the fence, ask yourself this: would you rather charge your phone five times over two days, or charge it three times but get to 50% in 30 minutes? That’s the real trade-off here, and your answer tells you which one to buy.
Winner: Charmast 26800mAh Slim Portable Charger
- 🔋【High Capacity Slim Portable Power Bank】: 26800mAh huge capacity...
- 🔋【High-Speed Charging】: 25% charging speed faster compared to...
- 🔋【Compact Battery Pack】: The weight of this power bank is around...
Best for anyone who needs maximum battery life on multi-day trips without access to outlets. The 26,800mAh capacity and slim 0.6-inch profile make it the ultimate travel companion.
Runner-Up: FlyKangaroo Portable Charger with Built-in Cables
- Portable Charger with Built-in Cables：Say goodbye to carrying multiple...
- 22.5W Super Fast Charging：Featuring advanced PD 22.5W fast charging...
- 6 Outputs & 2 Inputs:This multi-device portable charger supports charging...
Best for daily commuters and travelers who want 22.5W fast charging and hate carrying separate cables. The four built-in cords and LED display make it incredibly convenient.
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