Rolling Square claims, “Supertiny is the smallest 65W GaN Charger ever.” It’s definitely very small, but can still quickly power up a MacBook or other full-size computer.
I put the claims to the test and came away impressed. I do have one caution, though.
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Rolling Square Supertiny review
You can type on a MacBook for 18 hours without needing a recharge, while an iPad can offer 10 hours of use. Your iPhone battery should easily last a day unless you use it way too much. But the time inevitably comes when you have to plug these devices in.
Years ago, wall chargers capable of juicing up a MacBook were bulky enough to make good doorstops. Happily, we’ve moved past that, thanks to gallium nitride chips. GaN makes chargers smaller, lighter and more efficient than the old silicon-based ones.
That’s what lets the Rolling Square Supertiny be so small while still pumping out 65W.
Supertiny is the smallest 65W USB-C GaN wall charger ever. It’s pocket-size and perfect for travel. Still, it delivers up to 65W for fast and efficient charging of smartphones, tablets, laptops and other USB-C powered devices.
- Lives up to its “Supertiny” name
- Enough power for a MacBook
- Heats up during use
Table of contents: Rolling Square Supertiny review
- Supertiny: Lives up to its name
- Power performance
- That’s hot!
- Rolling Square Supertiny review: Final thoughts
- Pricing
Supertiny: Lives up to its name
Photo: Ed Hardy/Cult of Mac
To live up to the claim as “the smallest 65W GaN charger ever,” the accessory needs to be really small … and it is. The wall charger is smaller than my two thumbs pressed together: 2.9 inches long and 1.4 inches square.
For comparison, Apple’s 70W USB-C Power Adapter is 2.5 inches square and 1.1 inches thick, which works out to be 6.9 cubic inches. Supertiny is 5.6 cubic inches, so Apple’s version is 23% larger.
Be sure to remember which pocket you put Rolling Square’s wall charger in your backpack so you can find it. The gizmo is that small.
The downside of minimalism is that there’s only room for one USB-C port. Of course, there are plenty of larger wall chargers with only a single port… like Apple’s charger. And you only need a single port to provide power to a multi-device wireless charger for your bedside, like the Twelve South ButterFly.
I tested the U.S. version of the SuperTiny, which comes with flip-down power prongs. (Rolling Square sells U.K. and E.U. versions separately.)
Power performance
Photo: Ed Hardy/Cult of Mac
I put the Rolling Square Supertiny through real-world testing by having it power up my devices through a USB-C multimeter. It sent 28W to my iPhone 16 Plus, the most the handset can take. About 35W went to my iPad Pro, the tablet’s maximum. The charger sent 57W to the Mophie Powerstation Pro AC.
The most I could ever get out of the Supertiny in real-world testing was 60W, but that’s not surprising — I’ve never tested a wall charger that reached 100% of its theoretical maximum.
That’s hot!
The downside of cramming the components to produce lots of power into a small space is heat. The Rolling Square Supertiny is a perfect example.
When I noticed it warming up during testing, I got out my digital thermometer. After about half an hour at 60W, the wall charger reached 130 degrees. That’s not a dangerous temperature, but it’s certainly “Ouch, that’s hot!” territory.
Rolling Square Supertiny review: Final thoughts
As a frequent traveler, I believe in keeping the amount of gear I need to lug through airports down to a minimum. As such, I definitely see the advantages of the world’s smallest 65W GaN charger.
But be prepared for it to get quite warm.
★★★★☆
Pricing
Rolling Square Supertiny sells for $39.99.
Buy it from: Amazon
Supertiny is the smallest 65W USB-C GaN wall charger ever. It’s pocket-size and perfect for travel. Still, it delivers up to 65W for fast and efficient charging of smartphones, tablets, laptops and other USB-C powered devices.
- Lives up to its “Supertiny” name
- Enough power for a MacBook
- Heats up during use
Rolling Square provided Cult of Mac with a review unit for this article. See our reviews policy, and check out more in-depth reviews of Apple-related items.
