At a glance
Expert's Rating
Pros
- Apple Watch fast charge
- Can fast-charge two iPhones plus Watch
- 45W maximum output
- Battery display
Cons
- Anker alternative is smaller
Our Verdict
With its higher USB-C power output and superior dual-iPhone charging advantage, the Belkin BoostCharge Pro Power Bank 10K is a compelling alternative to Anker’s Apple Watch power bank. Although we still prefer Anker’s dinkier size, the 20g in weight difference won’t be noticed in your pocket or bag.
Price When Reviewed
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Best Pricing Today
Price When Reviewed
$99.95
Best Prices Today: Belkin BoostCharge Pro Power Bank 10K with Apple Watch Charger
What is it? The Belkin BoostCharge Pro Power Bank with Apple Watch Charger is a compact 10K power bank with built-in charger for Apple Watch, plus two USB-C outputs for other devices.
Who is it for? Apple Watch owners who need to charge their Apple Watch on the move, or quickly charge it with one or more iPhones at the same time.
Who shouldn’t buy it? If you want a smaller Watch power bank, consider the Anker MagGo Power Bank 10K for Apple Watch. If you’re after a magnetic connection to the iPhone check our reviews of the best wireless power banks.
The Apple Watch is probably Apple’s biggest battery failing. Compared to other smartwatches, its time between charging is rather pitiful.
- Apple Watch: 18 to 24 hours
- Google Pixel Watch: 24 to 36 hours
- Fitbit: 4 to 10 days
- Garmin: 5 to 30+ days
We have rounded up the best chargers for Apple Watch as you’ll be attending to its battery needs every day.
But what if your Apple Watch sends you that Low Battery alert when you out and about and away from a charger or wall power socket?
Any power bank with a USB-C port will work if you carry it and your Apple Watch Charger with you, but it’s more convenient to have a power bank with a built-in charger for the Watch—see our best Apple Watch power banks. Our favorites are the Anker MagGo Power Bank 10K for Apple Watch, Kuxiu K1 Pro/Ultra, and Alogic Lift.
To that list we now add the Belkin BoostCharge Pro Power Bank 10K with Apple Watch Charger (Belkin loves a long product name), which is closest in looks and function to the Anker MagGo.
You can charge the Apple Watch on its own with the raisable Watch Charger that means you can charge it flat with the band round the power bank or in Nightstand Mode.
It also boasts a built-in USB-C cable, capable of charging any supported device at 45W—enough to keep even a MacBook powered up as it supports Power Delivery (PD).
In addition, there’s a spare USB-C port, meaning you could simultaneously charge your Watch plus two iPhones. Note that only iPhones from 15 on have a USB-C charging port, so this could be used in conjunction with a USB-C to Lightning cable if you own an iPhone 14 or older.
Charging specs
- Apple Watch Fast Charge: Yes, 5W
- Built-in USB-C cable: 45W
- USB-C port: 45W
- Watch + iPhone: 5W + 40W
- Watch + iPhone + iPhone: 5W + 20W + 20W
- Input: 30W
Simon Jary
Belkin vs Anker: Which Apple Watch power bank wins in 2026?
Both Apple Watch power banks have a capacity of 10000mAh. A more accurate measurement of battery capacity is Watt Hours (Wh), where Belkin scrapes a narrow win.
- Belkin: 36Wh
- Anker: 35Wh
The Belkin BoostCharge Pro Power Bank 10K with Apple Watch Charger measures 4.7 x 2.4 x 1.3 inches (118 x 60 x 32mm) and weighs 9.4oz (265g).
The similar Anker MagGo Power Bank is smaller and lighter, measuring 3.7 x 2 x 1.3 inches (95 x 51 x 32mm) and weighs 8.64oz (245g).
Belkin
The Belkin power bank has a smooth silicone coating that feels great, while the boxier Anker is shinier with ridged sides for grip. Belkin’s Watch power bank is available in Black and Sand colors (see above), while Anker’s MagGo has black, white, pale pink and pale teal versions.
The Anker wins with its smaller size, but the Belkin wins on brute power delivery with its 45W USB-C beating Anker’s 30W. It can also charge two iPhones plus Watch at the same time, with both phones fast-charging at 20W and the Watch at a full 5W.
Anker’s MagGo can charge two iPhones at the same time but when using both the cable and the port, output is limited to 24W shared. That means a much slower iPhone charging time in that situation.
In tests, the Belkin BoostCharge Pro powered an Apple Watch (Series 8) to 25% in just over 20 minutes and 50% in 45 minutes. Even a 10% Watch charge should get you back to base unless you are on a long trip. After fully charging the Watch, the power bank had 89% of its charge remaining.
Each power bank charged our test iPhone 16 Pro quickly, reaching 50% in around 30 minutes. The Belkin scored a respectable 182% in our Macworld Recharge Score, which tests how many recharges a power bank can give an iPhone.
Simon Jary
That extra 15W didn’t make a big difference when charging an iPhone, as the Apple device can’t take in much more than 35W. It matters more for Samsung phones that do accept 45W, but surely Apple Watch owners are armed with an iPhone rather than a Samsung mobile.
On the other hand, the 45W will help if you need to charge a MacBook where the power bank’s 10K capacity will fill the laptop’s battery by around 40%. The max 45W vs 35W output also makes a difference when sharing between multiple devices.
Neither Belkin nor Anker can charge an iPhone magnetically. For that functionality, consider the Kuxiu K1 Ultra that can wirelessly charge an iPhone at 25W.
Both power banks have a 30W maximum input rate for when they need recharging themselves.
Each of the Apple Watch power banks has a charging display. Belkin’s shows the remaining power bank battery capacity as a percentage. Anker’s shows the capacity and the current charging power in watts as well as an extrapolation of the approximate duration, and is easier to see in poor light even though its reading is much smaller.
The Belkin’s integrated braided cable is 8.3 inches (210mm) long. It can be completely stowed in a side recess, where the Anker’s (about the same size) plastic cable will always poke out from one end as a handy carrying strap. It’s possible to create a similar long carry strap by plugging the Belkin cable’s connector back into its USB-C port, although it comes with a smaller loop at the top, too.
Simon Jary
Price
The Belkin BoostCharge Pro Power Bank 10K with Apple Watch Charger is priced at $99.95 as an Apple Store exclusive in the US.
It’s cheaper in Europe for some reason, selling for £69.95 at Apple U.K. and €74,95 at the German Apple Store. It’s also available direct from Belkin U.K. but for £79.99.
As we’ve been comparing it to the Anker 10K MagGo Power Bank For Apple Watch, it should be noted that Belkin’s rival is a little cheaper at $89.99 / £69.99.
Should you buy the Belkin BoostCharge Pro Power Bank 10K with Apple Watch Charger?
The Anker MagGo Power Bank has long been my favorite among the power banks with an Apple Watch charging port. With its higher USB-C power output and superior dual-iPhone charging advantages, the Belkin BoostCharge Pro Power Bank 10K is a compelling alternative. Although we still prefer Anker’s dinkier size, the 20g in weight difference won’t be noticed in your pocket or bag.
