Zero Core X 10,000mAh 22.5W Magnetic Power Bank

A pocket pack that carries its own cable

At 70 x 63.5 mm and 185 g the Core X is closer to a thick matchbox than a brick, and the USB-C cable is moulded into the body, so the wire can never be left at home. A USB-C to Lightning strap cable comes in the box as well, which covers an older iPhone. For an evening of load-shedding it is enough; for a weekend in a village with no electricity, the larger Xiaomi 20000 mAh pack is the pack to carry.

The capacity Zero actually publishes

The cells hold 10000mAh, and Zero prints what reaches the phone: a rated capacity of 5800mAh. That gap is normal and unavoidable, because the energy stored at the cells' low voltage has to be stepped up to 5V and some of it leaves as heat. In daily terms it means one full charge of a typical 5000 mAh phone with a worthwhile top-up left over, not two. A brand willing to print that number is telling you something; our power bank buying guide explains how to read the rest of the label.

Magnetic charging, and how fast it really is

Snap a compatible phone onto the back and charging starts with no cable. Zero lists the pad as Qi-1 with steps of 5W, 7.5W, 10W and 15W, so the top rate goes to phones that support it; an iPhone keeps its full magnetic speed for MagSafe and Qi2 chargers, and will take the slower wireless rate here. Wireless charging also runs warm and wastes more energy than a wire, so the built-in cable is the faster choice. A thick case or one without magnets will break the hold.

Why a Pakistani brand earns a place

Zero sells from its own Pakistani shop and runs its own service desk, which is more of a channel than most accessory brands here can show, and it is the reason this pack is listed while better-reviewed imports are not. A 22.5W output suits a phone, not a laptop. More options are in the power banks section, and the whole range is sourced per order, box-pack. Chhota sahi, kaam ka hai.