Belkin BoostCharge Slim Magnetic Power Bank 10K review: the ultra-thin magnetic battery

External batteries are often bulky. With the BoostCharge Slim Magnetic Power Bank 10K, Belkin offers a 10,000 mAh battery that snaps magnetically onto the back of your phone, cable-free, in a slim 16 mm form factor. Here's what it's worth.

A form factor that makes the difference

The first asset is slimness: 103 × 72 × 16 mm for 10,000 mAh. It slips into a pocket while staying attached to your phone, a real everyday comfort.

The attachment is magnetic: the battery self-aligns on the back of iPhones and Qi2-compatible devices, without blocking the camera module.

Wireless and wired charging

On the power side, it delivers 7.5W wireless charging on contact, and offers two USB-C ports to charge a second (and third) device over cable.

• 7.5W wireless charging: snap-on, no cable needed;
• 2 USB-C ports: up to 3 devices at once;
• Pass-through charging: recharge the battery while powering your phone;
• 10,000 mAh: about 51 hours of extra battery life.

Travel-ready

It is TSA compliant (38.7 Wh), so accepted in carry-on luggage, ships pre-charged and comes with a 0.6 m USB-C to USB-C cable.

Strengths and limits

The strong point is the combination of slimness and capacity. On the other hand, wireless charging is capped at 7.5W (no 15W Qi2 on this model), and the finish remains standard.

Verdict

A convincing magnetic battery for anyone wanting a slim, all-rounder solution: 10,000 mAh, wireless, travel-ready. The 7.5W wireless charging positions it for everyday use rather than ultra-fast top-ups.

🔋 See the Belkin BoostCharge Slim Magnetic Power Bank 10K on the official site.