Home/Samsung Galaxy/Power Banks/GALVANOX MAG-5 5,000mAh Magnetic Power Bank
Samsung didn’t put magnets in the Galaxy S26, so a snap-on power bank won’t stick to one unless you add a magnetic case first. Keep that in mind, because everything about the GALVANOX MAG-5 depends on it.
If you’ve already got that case, this is a small 5,000mAh battery that clicks onto the back of the phone for an evening top-up, at a much lower price than Samsung’s own.
Reviewed by the Tiny Tech Box team
Version reviewed: GALVANOX MAG-5 Magnetic Power Bank for Samsung Phones, 5,000mAh 15W wireless charging, Black · ASIN B0F8RDDGXC · Amazon US listing · a magnetic (MagSafe-style) case is required on a Galaxy.
One-sentence verdict: Consider it if you have a Galaxy with a magnetic case and want a cheap 5,000mAh snap-on top-up; just know that 5,000mAh is one partial charge, the rating is mixed, and Samsung’s own version adds a kickstand.
A 5,000mAh magnetic bank that snaps to a magnetic-cased Galaxy; it also charges a second device by cable.
Image source: Amazon.com
| Best for | Galaxy owners with a magnetic case who want a cheap, small magnetic bank for a single top-up. |
| Not ideal for | Anyone who needs more than one partial charge, or who does not want to run a magnetic case. |
| Current price | $29.99 on Amazon |
| Price checked | Oct 5, 2026 |
| Version reviewed | GALVANOX MAG-5 5,000mAh Magnetic · 15W Qi2 wireless · Black · ASIN B0F8RDDGXC · Amazon US |
It’s a compact black puck, a little bigger than a stack of cards, with a magnetic charging face and a USB-C port on the side. Plain, and light.
There’s no kickstand and no shaped cutout for the Galaxy’s camera bar, both of which Samsung’s version has, so it simply sits flat against the back of the case.
Put a magnetic case on the Galaxy, snap the MAG-5 onto the back and it starts charging. You can plug a second device into the USB-C port and charge both at once, and the same port recharges the bank.
As a magnetic top-up, it works. Fifteen watts over Qi2 is a fair wireless rate, the magnet holds through normal handling, and being able to charge a second device at the same time is useful.
Capacity is the hard limit. Once you take wireless-charging losses into account, 5,000mAh is one partial charge for a big Android battery, which will get you through an evening out but won’t save you on a long travel day.
As for that 3.9-star average, it comes from a small sample, and it reads like a mix of owners who found it perfectly fine and some who ran into weak magnets or unreliable charging.
Works with:
Not compatible:
Not much to go on yet. With a small brand, a short track record and around 300 ratings, there isn’t a durability story to tell. On any bank like this, the magnet and the USB-C port are where wear usually shows up first. GALVANOX mentions a limited warranty, but the listing doesn’t give the term.
At $29.99, the MAG-5 sits between a cheap flat power bank and Samsung’s official magnetic one. Belkin’s 5,000mAh Qi2 magnetic bank, which we rate a little higher, costs $59.99 and adds a kickstand.
Its whole pitch is cheap magnetic charging for a Galaxy, and that only makes sense if you were going to use a magnetic case anyway. If you weren’t, the case becomes part of what this bank really costs you. A small flat power bank is cheaper still, and it works with any phone, magnets or not, so if all you want is a bit of extra battery in your bag, that is the more sensible place to start.
3.9 ★ from 307 Amazon ratings · price checked Oct 5, 2026
Price and availability may change after the date shown.
| Product | Best for | Key advantage | Main drawback | Price |
|---|---|---|---|---|
| GALVANOX MAG-5 5,000mAh Magnetic (this bank) | Cheap magnetic top-up charging for a Galaxy | $29.99; 15W Qi2; dual charging; undercuts Samsung’s own | 5,000mAh is one partial charge; needs a magnetic case; 3.9 stars | $29.99 |
| Belkin 5,000mAh Qi2 MagSafe Power Bank | The same capacity with a kickstand and a better rating | Built-in kickstand; Qi2-certified; brand support | About twice the price | $59.99 |
| TORRAS MiniMag 10,000mAh Magnetic Power Bank | Double the capacity in a slim magnetic bank | 10,000mAh; slim; snaps on when needed | Slower 7.5W wireless on an iPhone; still needs a magnetic case on a Galaxy | $44.98 |
Is 5,000mAh enough? Then the MAG-5 does the job. Pay more for the Belkin if you want a kickstand and a stronger rating, or get the TORRAS MiniMag for double the capacity. Whichever you choose, a Galaxy will still need a magnetic case.
Narrow job, fair price. The MAG-5 adds cheap magnetic top-up charging to a Galaxy that has no magnets of its own, provided you put a magnetic case on the phone. The 15W Qi2 speed and the two-at-once charging are useful, and it costs much less than Samsung’s version.
What holds it back is capacity and confidence. Five thousand milliamp-hours is one partial charge, the 3.9-star average is built on a small sample, and Samsung’s dearer bank adds a kickstand and a proper camera-bar cutout. If the MAG-5 fits your setup and budget exactly, buy it. Otherwise, the Belkin or a bigger magnetic bank is a safer way to spend the money.
| Category | Score |
|---|---|
| Design — compact and light, but no kickstand and no Galaxy camera-bar cutout that Samsung’s own version has | 3.5 / 5 |
| Value — undercuts Samsung’s magnetic bank, but 5,000mAh is a small amount of power for $29.99 | 3 / 5 |
| Performance — 15W Qi2 and dual charging work well; 5,000mAh is a single partial top-up | 3.5 / 5 |
| Build & Durability — a minor brand with a thin 3.9-star record across ~300 ratings | 3 / 5 |
| Compatibility & Ease of Use — snap-on simple, but a Galaxy needs a magnetic case first | 3.5 / 5 |
| Overall | 3.3 / 5 · Average |
The overall score is the average of the five aspects above. How we score.
| Brand / line | GALVANOX — MAG-5 Magnetic Power Bank |
| Capacity | 5,000mAh |
| Wireless output | 15W Qi2 magnetic (GALVANOX) |
| Magnet requirement | A magnetic (MagSafe-style) case is required on a Galaxy; the phone has no magnets of its own |
| Dual charging | Can charge the phone wirelessly and a second device by the included cable at the same time (GALVANOX) |
| Cable | Included |
| Target device | Samsung Galaxy phones (also works with MagSafe iPhones) |
| Weight | N/A |
| Warranty | GALVANOX limited warranty; exact term not printed on this listing |
| ASIN | B0F8RDDGXC |
| Manufacturer | GALVANOX |
Figures marked “GALVANOX” are the manufacturer’s published claims. “N/A” means the value is not listed on the Amazon listing or the GALVANOX product page.
Yes. The Galaxy S26 series has no built-in magnets, so you need a magnetic (MagSafe-style) case for the MAG-5 to attach and line up for wireless charging.
After wireless-charging losses, roughly one partial charge. That’s enough to get a big-battery phone through an evening, not a full day.
Yes. It charges the phone wirelessly and a second device through its USB-C port at the same time, and a cable is included.
Samsung’s version costs a lot more but adds a built-in kickstand and a cutout that clears the Galaxy’s camera bar. The MAG-5 is the budget option without those extras.
Yes. MagSafe iPhones have magnets built in, so it attaches and charges without a special case.
Every pick links to its full five-aspect review.
Prices and availability are accurate as of the date shown and are subject to change. The price and availability displayed on Amazon at the time of purchase will apply.
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Sources: Amazon product listing (ASIN B0F8RDDGXC), read Aug 28, 2026 · GALVANOX MAG-5 product information (Amazon listing) for capacity, output and the magnetic-case requirement · 9to5Google and Notebookcheck coverage of Samsung’s own 5,000mAh Qi2 magnetic bank for context. Figures attributed to GALVANOX are the manufacturer’s published claims; the rating, price and buyer feedback are from the live Amazon listing on the date shown.
Disclosure: As an Amazon Associate, Tiny Tech Box earns from qualifying purchases. Recommendations are based on our own research and scoring, described in full on our How We Score page.