How many times can it charge a phone?

With 10,000 mAh, expect roughly two full charges for a typical phone, less if the phone has a large battery.

Does it charge a laptop?

No. At 20 W it is meant for phones, earbuds and small accessories, not laptops.

Can it charge two devices at once?

Yes. The dual USB-C ports and USB-A port let you charge more than one device at a time, though total output is shared.

How do I know how much charge is left?

The LED digital display shows the remaining battery percentage.

Does it come with a cable?

The pack is the main item; plan on using your own USB-C cable for charging it and your devices.

Is it allowed in carry-on luggage?

Yes. At 10,000 mAh it is well under the common airline limit for carry-on power banks, but it must go in the cabin, not checked bags.

Where is the onn 10,000 mAh Portable Power Bank cheapest?

At Walmart, for $12.88, as of our latest check.

onn 10,000 mAh Portable Power Bank

Best price now

$12.88at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

onn 10,000 mAh Portable Power Bank

Best price now

$12.88at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $12.88 at Walmart on Nov 10.

Our take on the onn 10,000 mAh Portable Power Bank

The onn 10,000 mAh Portable Power Bank is a slim, light backup battery for phones and small devices. It has dual USB-C ports and one USB-A port, 20 W output, and an LED display that shows remaining charge. At 0.44 lb and 0.63 in thick, it slips into a pocket or bag easily. It suits commuters, students and travelers who want a simple top-up without paying for premium features like wireless charging or a built-in cable.

Best forCommuters and students topping up a phone during the dayTravelers who want a light backup batteryAnyone who wants to see remaining charge at a glance

Pros

Light at 0.44 lb and slim at 0.63 in
LED digital display shows remaining battery percentage
Two USB-C ports plus one USB-A port
20 W output charges phones quickly
Simple, no-fuss design

Cons

No wireless charging
No built-in cable
10,000 mAh gives roughly two phone charges, not more
No fast-charge support beyond 20 W

onn 10,000 mAh Portable Power Bank prices at every store

WalmartNew
In stock
$12.88Checked Nov 10
Visit Walmart

What reviewers say

4.5 / 5506 ratings

Rated 4.5 out of 5 from 506 ratings. Owners like the light build, the clear battery display and the mix of ports. Complaints center on capacity and charging speed for larger devices.

What people mention

PortabilityPraisedOwners say it is light and slim enough to carry every day.
Battery displayPraisedThe LED percentage readout is called handy for knowing when to recharge.
PortsPraisedTwo USB-C ports and a USB-A port cover most phones and cables.
CapacityMixedSome owners find 10,000 mAh enough for a couple of charges, others want more.
Charging speedMixed20 W is fine for phones but slow for tablets and larger devices.

About the onn 10,000 mAh Portable Power Bank

This onn portable power bank has a 10,000 mAh capacity and provides backup power for everyday devices when you're away from an outlet. It has a 20 W output.

It has two USB-C ports and one USB port, so you can make multiple connections from a single pack. An LED digital display shows the remaining battery life, so you can tell when the power bank itself needs recharging.

The power bank measures 4.53 in x 2.76 in x 0.63 in and weighs 0.44 lb. It fits in a bag or pocket.

Brand: onn
Capacity: 10,000 mAh
Output: 20 W
Ports: 2 x USB-C, 1 x USB
Display: LED digital display showing remaining battery life
Dimensions: 4.53 in x 2.76 in x 0.63 in
Weight: 0.44 lb
Color: Black
Pack size: 1 power bank

Specifications

multipack_quantity: 1Source
color: BlackSource
size: 10,000 mAhSource

Questions and answers

How many times can it charge a phone?: With 10,000 mAh, expect roughly two full charges for a typical phone, less if the phone has a large battery.
Does it charge a laptop?: No. At 20 W it is meant for phones, earbuds and small accessories, not laptops.
Can it charge two devices at once?: Yes. The dual USB-C ports and USB-A port let you charge more than one device at a time, though total output is shared.
How do I know how much charge is left?: The LED digital display shows the remaining battery percentage.
Does it come with a cable?: The pack is the main item; plan on using your own USB-C cable for charging it and your devices.
Is it allowed in carry-on luggage?: Yes. At 10,000 mAh it is well under the common airline limit for carry-on power banks, but it must go in the cabin, not checked bags.
Where is the onn 10,000 mAh Portable Power Bank cheapest?: At Walmart, for $12.88, as of our latest check.
What do buyers say about the onn 10,000 mAh Portable Power Bank?: Rated 4.5 out of 5 from 506 ratings.