Graphene Cooling in Portable Batteries: Does the Technology Work in Practice?

Momax has released the Q.Mag X portable charger, which stands out among competitors due to its combination of compactness and efficient heat dissipation. The 5000mAh (19.35Wh) model supports 15W Qi2 wireless charging and features an additional 20W USB-C port. The device is compatible with iPhone 12–17, AirPods, and Android smartphones with wireless charging.

The key feature of the Q.Mag X is its minimal heat generation even during intensive use. Unlike many competitors that heat up to uncomfortable temperatures, this model remains barely warm. The manufacturer attributes this to the use of graphene coating, which evenly distributes heat. To verify these claims, a ZDNet expert disassembled the device and confirmed the presence of a graphene layer on the battery.

The Q.Mag X is constructed from aluminum and glass, giving it a premium look but reducing its impact resistance. The device is only 8.3mm thick and weighs 125 grams, making it one of the thinnest and lightest in its segment. The package includes a microfiber cloth for surface care. The model is priced at around $30, making it accessible to a wide range of users.

The internal assembly of the device is also noteworthy: the manufacturer used high-quality components and heat-resistant materials. However, disassembly revealed that reassembly after opening is nearly impossible due to extensive adhesive connections. For those needing greater capacity, Momax offers a 10,000mAh version with similar specifications.