Sharge Icemag 3 Power Bank review: Light up your fast charging

Macworld

At a glanceExpert's Rating

Pros

Large battery capacity

Built-in USB-C cable

25W wireless or 35W wired charging

30W input

Kickstand

Fun lights

Cons

Noisy fan

Built-in USB-C cable is geared to iPhone 15/16/17 users

Our Verdict
The pocketable 10K Sharge Icemag 3 is as fast as wireless gets and it scored well in our tests of battery capacity. Its fancy RGB lights are fun but unnecessary. The kickstand is super stable and the built-in 35W USB-C cable is a great addition for owners of newer iPhones.

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This magnetic power bank doesn’t just look cool—it is actively cooled by a fan to keep the fast 25W wireless charging at an optimum from start to finish.

The Sharge Icemag 3 takes active cooling to the next level, although this does mean there’s an audible hum during the fast-charging process.




Simon Jary

Design

The Icemag 3 looks like no other portable power bank. At the top is a transparent section that lights up when it is charging a phone or being charged itself. The colors don’t seem to mean much, but they do look pretty.

It measures 4.3 x 2.8 x 0.78 inches (11 x 7.1 x 2cm) and weighs 7.7oz (220g). For a 10K capacity power bank that’s about average and a little lighter than some of the competition.

The slimmest 10K magnetic power bank we’ve tested is the 15W Anker MagGo Slim (0.58 inches deep); the 5K version of that power bank is just 0.34 inches thin.

On the back with the transparent section is a large stable metal kickstand that keeps the iPhone in place either in portrait or landscape mode.




Sharge

At the bottom of the power bank is the built-in USB-C cable that you can use to recharge the power bank itself at a speedy 30W or use to wired charge any iPhone 15 or later at a brisk 35W.

There is also a 30W USB-C port so you can charge three devices simultaneously using wireless, the built-in cable and another via the port and your own cable. As with most power banks, multi-device charging reduces the overall output to 15W so you’ll lose the benefits of the 25W wireless and 35W cable with three things charging at the same time.




You can plug the built-in USB-C cable into the spare USB port to create a loop handle.Simon Jary

Wireless power

The most convenient way to charge an iPhone (12 or later) is via a magnetic charger, and the Icemag 3 utilizes the latest Qi 2.2 wireless charging technology to do so at 25W. You won’t find any wireless power bank that’s faster.

25W wireless charging is only possible with the iPhone 16 or later. Older iPhones are limited to 15W, which is speedy but noticeably slower than 25W.

In our tests a 15W charger can get a faded iPhone from 0-50% in around 45 minutes, while 25W does the same in just over 30 minutes. If you need your phone back in action quickly, 25W is the way to go.

That amount of power gets hot quickly, which can impact charging speed as the phone reduces the power to maintain its battery health. Sharge offsets this by using a fan to actively cool the power bank and phone. This keeps charging at an optimal level but does produce a noise that is quite noticeable. If you can keep the phone away from hearing range, that’s fine but it is the noisiest power bank we’ve heard.




There is a four-LED battery indicator on the side that takes the RGB light show for its own ends.Simon Jary

Battery power

The Icemag 3 has a 10000mAh (39.1Wh) battery capacity. Most magnetic power banks come in either a slim 5K capacity or slightly bulkier 10K like the Icemag.

In our Macworld recharging test, we take an iPhone 16 Pro from 0%, refill it to 100% with the power bank and then go again until the power bank is empty.

The Icemag 3 scored 171%, meaning it fully recharged the iPhone and then went to 71% on the second charge. We’ve seen up to 190% on some 10K magnetic power banks—for example the EcoFlow RAPID and Anker Zolo—but 171% is around average.

The Icemag 3 beats those power banks with its wireless charging speed of 25W, where they are still at 15W.

Rival 10K power banks with 25W wireless charging include the Baseus PicoGo AM61 that also includes a built-in cable (45W) and is a little smaller and lighter but score marginally less on our recharge score (167%). The Ugreen MagFlow Power Bank scored a lower 144% and is a bit heavier than the Icemag 3.




Simon Jary

Price

The Sharge Icemag 3 costs $79.90, which is cheaper than the $89 EcoFlow RAPID but dearer than the $49K Anker Zolo. Remember that those power banks are 15W not 25W.

For a 25W comparison, the Baseus AM61 costs $69 and the Ugreen MagFLow $89.

Read all our reviews of the best magnetic wireless power banks.

Should you buy the Sharge Icemag 3?

At 25W the pocketable 10K Sharge Icemag 3 is as fast as wireless gets and it scored well in our tests of battery capacity. Its fancy RGB lights are fun but unnecessary. The kickstand is super stable and the built-in 35W USB-C cable is a great addition for owners of newer iPhones.