pros and cons
- Remarkably slim and lightweight
- Charges two devices at the same time
- Stays cool even under heavy use
- Aluminum and glass build isn’t very durable
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A wide range of “MagSafe” magnetic wireless battery packs are available today. Some perform well, while others fall short in various ways. Occasionally, certain products clearly outshine the competition. These standout packs are carefully constructed with quality materials and assembled with attention to detail.
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The Momax Q.Mag X is one such standout power bank. It’s slim, lightweight, stylish, and stays impressively cool in every way.
A stylish power bank
The Q.Mag X is a 5,000 mAh / 19.35 Wh power bank that magnetically attaches to your iPhone for on-the-go charging. Its compact capacity means it won’t raise any concerns at airport security, and the CCC certification ensures it clears even the strictest checkpoints at Chinese airports.
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This unit has a high-end look and feels great to hold due to its glass and aluminum design. It’s not the toughest power bank out there — for rugged builds, take a look at the Nitecore NW5000 or the Dark Energy Poseidon Nano — but if aesthetics matter most to you, this is the ideal pick.
One of the rare power banks that includes a polishing cloth.
Adrian Kingsley-Hughes/ZDNET
But there’s more to the Q.Mag X than just looks. To help keep it pristine, the package even comes with a microfiber polishing cloth.
Slim, light, and cool
To start, it’s incredibly slim — just 8.3 mm / 0.33 inches thick. That’s about the width of a pencil and only slightly thicker than the thinnest part of an iPhone 17, which measures 7.95 mm / 0.31 inches.
A gorgeous power bank.
Adrian Kingsley-Hughes/ZDNET
The unit is also featherlight at just 125 g / 4.4 oz — only 5 g / 0.18 oz heavier than the carbon fiber Nitecore NW5000.
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On the front sits a 15W Qi2-compatible wireless charger compatible with iPhones from the 12 through the 17 series, AirPods with a wireless charging case, and Android phones that support wireless charging. For everything else, there’s a 20W USB-C port on the bottom. And for those juggling multiple devices, the bank supports charging wirelessly and via cable at the same time.
It also features pass-through charging, so you can charge a wireless device while the power bank itself recharges — great for overnight use. All popular charging protocols are supported, along with standard built-in safety features.
The Momax Q.Mag X is just 8.3 mm / 0.33 inches thick.
Adrian Kingsley-Hughes/ZDNET
The Q.Mag X runs cool during use — impressively so for a 15W MagSafe power bank, which can sometimes feel like holding a hand warmer. This unit barely got warm at most. The Amazon listing mentions graphene-based heat dissipation, which wouldn’t surprise me at all, since I noticed no hot spots on the device whether it was charging or being charged (I’ll revisit this topic shortly).
I genuinely love the Q.Mag X. I realize it’s “just” a power bank, but the craftsmanship is outstanding. It strikes a perfect balance between form and function. I’ve been enjoying using it daily over the past few weeks.
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Which is why the next part was a tough pill to swallow. I needed to know whether the power bank actually uses graphene for cooling, and there was only one way to find out.
Time to peek inside.
Adrian Kingsley-Hughes/ZDNET
Time to open it up
It was time to grab the spudger, get destructive, and look inside (yes, I know using a metal spudger near a live lithium-ion battery is risky, but it’s a habit I’ve had for years). I hated having to do this, but it was necessary.
Getting into this device was no easy task.
Adrian Kingsley-Hughes/ZDNET
I
First, yes, the battery does indeed feature a graphene coating. While it may resemble ordinary black paint, graphene is actually a carbon-based material known for its outstanding thermal conductivity and infrared emissivity. This makes it ideal for application on metals, plastics, and electronic components to efficiently distribute and release heat.
The dark layer covering the battery is graphene—an excellent material for managing and dispersing heat.
Adrian Kingsley-Hughes/ZDNET
I also discovered that this device is exceptionally well constructed. Opening it up required some effort, thanks to the generous use of sealant, adhesive, and thermal silicone holding everything securely in place.
Good luck reassembling this gadget once it’s been opened.
Adrian Kingsley-Hughes/ZDNET
Additionally, Momax hasn’t cut corners on the internal components—even the parts hidden from view are made with premium materials and assembled with care.
ZDNET’s buying advice
Having tested numerous wireless power banks, I can confidently say the Momax Q.Mag X stands out both in design and build quality. Priced at just under $30 (though this may vary with current deals), it’s an outstanding value. It’s especially worth considering if you frequently use your devices in high-temperature environments where battery safety is a concern.
If you need greater capacity, Momax offers a larger 10,000 mAh model with the same high-quality construction—for less than $10 extra.
