1 / 7MaiVoz 56,800mAh 22.5W Power Bank
MaiVoz 56,800mAh Power Bank is a high-capacity portable charger with a claimed 22.5W output, a percentage display and three device outputs. Its large stated capacity is aimed at extended outings and backup use, but the listing says it is not allowed on airplanes.
At a glance
- The LED display shows the remaining battery percentage, making charge level visible at a glance.
- Two USB-A outputs and a two-way USB-C port are claimed to support charging up to three devices at once.
- The listing claims 22.5W USB-C fast charging and gives an iPhone 17 example of about 60% in around 40 minutes.
- The product is promoted for camping, road trips and backup use, but the listing says its capacity is not allowed on airplanes.
Reference price: $44.24
Price checked: Nov 11, 2026
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Pros and cons
Pros
- Large stated capacity is intended for extended use away from outlets.
- Three output ports can accommodate several USB devices at once, according to the listing.
- The percentage display provides a clear indication of remaining power.
Cons
- The listing explicitly says the power bank is not allowed on airplanes, limiting its usefulness for air travel.
Technical specifications
10 specifications| Brand | MaiVoz |
|---|---|
| Color | Black |
| Battery capacity | 56800 milliamp_hours |
|---|---|
| Voltage | 5 volts |
| Claimed fast-charging output | 22.5W |
| Output ports | 2 USB-A outputs and one two-way USB-C port |
| Simultaneous device charging | up to 3 devices at once |
| Special features | Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection |
|---|---|
| Battery display | remaining battery percentage |
| Additional claimed safeguards | overvoltage, overheating, short circuits, and overcurrent |
What to know before buying
- The 22.5W and device-charge figures are manufacturer claims, not independently verified, actual charging speed and number of charges depend on connected devices and use. The listing says it is not allowed on airplanes, so do not plan to carry it on a flight.
Who is it for?
A good fit for
- Campers and road trippers seeking a high-capacity USB backup source.
- People who want to charge several USB devices at once away from outlets.
- Emergency kits and outdoor work where an outlet may not be available.
Less suited to
- Air travelers, because the listing says this battery capacity is not allowed on airplanes.
- Buyers who need independently verified capacity or charging-performance measurements.

Customer reviews on Amazon
- 5 stars
76% 76% - 4 stars
9% 9% - 3 stars
4% 4% - 2 stars
3% 3% - 1 star
8% 8%
The supplied evidence includes an aggregate rating of 4.4 out of 5 stars, but no review comments or rating count. That figure alone does not establish why buyers rated it as they did, consider it separately from the unverified capacity and charging claims when judging suitability for extended backup use.
Frequently asked questions
How many devices can it charge at once?
The listing claims up to three devices at once, using two USB-A outputs and one two-way USB-C port.
Does it show how much charge remains?
Yes. The listing describes a built-in LED display showing the remaining battery percentage.
Can I take it on an airplane?
The listing says it is not allowed on airplanes because of its battery capacity.
Is the stated charging speed guaranteed for every device?
No. The 22.5W figure and example charging time are manufacturer claims, charging performance can depend on the device and conditions.

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