Xiaomi's UltraThin Magnetic Power Bank 5000 15W packs 5,000mAh into a 6mm profile

Xiaomi has unveiled the UltraThin Magnetic Power Bank 5000 15W, a remarkably compact wireless charging solution that manages to squeeze 5,000mAh of capacity into a body measuring just 6mm thick and weighing only 98 grams. The diminutive power bank supports Qi2 wireless charging up to 15W and includes a USB-C port for faster wired charging at 22.5W.

The power bank's dimensions are particularly noteworthy - at 98.5 × 71.5 × 6mm, it's slightly narrower than a Xiaomi 17 (71.8mm) and matches the width of an iPhone 17 exactly. This makes it an ideal companion for on-the-go charging without adding significant bulk to your pocket or bag.

Wireless charging with limitations

While the device supports Qi2 wireless charging, there are some caveats worth noting. The full 15W wireless charging speed is only available for Xiaomi 17 devices. iPhones are limited to 7.5W wireless charging, which is notably slower than the 15W that Qi2 is capable of delivering. Additionally, while the power bank features magnetic attachment, the Xiaomi 17 itself lacks built-in magnets, requiring users to purchase a magnetic case for optimal wireless charging convenience.

Dual-device charging capability

One of the more practical features is the ability to charge two devices simultaneously - one wirelessly and one via the USB-C port. Users can activate this dual-charging mode by tapping the power button, making it useful for charging both a phone and accessories like earbuds or a smartwatch at the same time.

Premium build and advanced battery technology

The UltraThin Magnetic Power Bank features an aluminum alloy shell available in three colors, with the side that attaches to phones made from fiberglass. Inside, it uses a Silicon-Carbon cell with 16% silicon content, offering a typical capacity of 18.95Wh (rated at 18.58Wh). The battery also includes a 4,369mm² graphite sheet for cooling and multiple protection mechanisms against over-voltage, overcharge, over-discharge, overcurrent, overheating, and electrostatic shock.

Market availability and pricing

The power bank is already available in several Asian markets, priced at AUD 69.50 in Australia, SGD 69.90 in Singapore, and JPY 5,980 in Japan. However, it hasn't yet made its way to Western markets, leaving many potential customers waiting for broader availability.

Reader reactions and practical considerations

Reader comments on the announcement reveal mixed reactions. Some users appreciate the convenience factor, noting that even with wireless charging inefficiencies (which can result in around 50% power loss), a 50% endurance boost is valuable. Others question the practicality of wireless power banks altogether, arguing that carrying a traditional charger or wired power bank would be more efficient given the power losses inherent in wireless charging.

The debate highlights an ongoing tension in mobile accessory design between convenience and efficiency. While wireless charging eliminates cable clutter and offers seamless attachment, the power loss and slower charging speeds compared to wired alternatives remain significant drawbacks for many users.

Context in the mobile accessory market

Xiaomi's UltraThin Magnetic Power Bank represents the continuing trend toward ultra-portable power solutions that don't compromise on capacity. As smartphones continue to demand more power for increasingly demanding applications, manufacturers are finding innovative ways to pack more energy into smaller form factors. The use of Silicon-Carbon battery technology is particularly noteworthy, as this represents a step forward in battery chemistry that could become more common in future mobile devices and accessories.

For users who prioritize convenience and minimal bulk over absolute charging efficiency, this power bank offers an intriguing option. However, those who value charging speed and efficiency may find traditional wired power banks more suitable for their needs. The limited iPhone charging speed and the requirement for magnetic cases on some devices also suggest that this accessory is primarily targeted at Xiaomi's ecosystem rather than serving as a universal solution.

The UltraThin Magnetic Power Bank 5000 15W demonstrates Xiaomi's engineering prowess in creating compact, capable accessories, even if its practical appeal may be limited by the inherent compromises of wireless charging technology.