Graphene Battery Power Bank: 4000mAh Capacity in 4mm Slim Aluminium Case

This portable power bank utilises graphene battery technology to provide 4000mAh of supplementary charging capacity for smartphones. Designed for travel and daily use away from power outlets, the unit features an aluminium alloy construction that keeps weight to 154g while maintaining structural integrity. With dimensions of 140mm x 72mm x 4mm, it offers a slim profile that fits comfortably alongside your phone in pockets or bags. The power bank supports both Apple iPhone and Android devices through standard charging cables, delivering 5V/1A output for compatible charging. Recharging the unit requires approximately 3 hours via its 5V input connection.

Features and Construction

The power bank combines specific materials and measurements to create a functional portable charging solution. Its construction prioritises portability through precise weight and dimension specifications.

Material and Build

The outer casing utilises aluminium alloy, providing a rigid enclosure for the internal components while contributing to the overall 154g weight. This material choice offers basic structural protection without adding excessive bulk. Internally, the unit employs graphene battery technology, which provides the stated 4000mAh capacity. No additional performance characteristics, durability claims, or premium features beyond these material specifications are supported by the source data.

Size and Practical Fit

Measuring 140mm in length, 72mm in width, and just 4mm in thickness, the power bank maintains a slim profile that complements modern smartphones. These exact dimensions determine how the unit pairs physically with devices during use and transport. The 154g weight specification indicates how it feels when carried in pockets, bags, or held alongside a phone. No comparative size claims against other power banks are supported by the source text.

Uses and Placement

The power bank serves specific practical scenarios where portable charging capability is required. Its compatibility and specifications determine appropriate usage contexts.

Event or Professional Use

During travel, conferences, or extended days away from office or home power sources, the 4000mAh capacity provides supplementary charging to extend smartphone usage. The slim 4mm profile allows discreet carrying in briefcases, laptop bags, or professional carry cases. The aluminium construction offers basic protection against minor impacts during transport between locations. No specific professional-grade certifications or specialised event-use features are indicated beyond the stated specifications.

Everyday Home Use

For daily use around the home, the power bank offers convenient charging without requiring proximity to wall sockets. Its lightweight design at 154g makes it easy to carry between rooms while using a phone or tablet. The dual compatibility with Apple and Android devices means it can serve multiple household phones with appropriate cables. The approximately 3-hour recharge time suggests overnight charging between daily uses represents a practical pattern.

Benefits and Buying Value

The power bank provides specific practical advantages based on its measurable specifications. These benefits derive directly from the stated capacity, dimensions, and compatibility features.

Reuse and Low Maintenance

The graphene battery and aluminium construction require minimal maintenance beyond basic electronic device care. No specialised cleaning or handling instructions are provided, suggesting standard care for electronic items applies. The unit offers repeated use through its rechargeable design, with the 5V input enabling regular power restoration. No lifespan estimates, cycle counts, or longevity guarantees are supported by the source data.

Why Choose This Product

This power bank may suit users seeking a specific combination of 4000mAh capacity in an exceptionally slim 4mm profile. The 154g weight addresses portability concerns, while aluminium construction provides basic durability. Dual Apple/Android compatibility covers most smartphone users without requiring device-specific models. The absence of wireless charging, fast-charging technologies, or multiple ports indicates this unit serves basic wired charging needs rather than advanced feature sets.