Ultra-slim 4mm graphene power bank with 4000mAh capacity for phone charging

This graphene battery power bank provides 4000mAh of backup power for smartphones, featuring an exceptionally slim 4mm thickness that makes it easy to carry. At just 154 grams, it adds minimal weight to bags or pockets while offering practical charging support when mains electricity isn't available. The power bank works with both Apple iPhones and Android smartphones through standard USB connections, providing versatile compatibility for different devices. Its silver finish offers a neutral appearance suitable for various settings, from professional environments to casual daily use.

Features and Construction

The power bank utilises graphene battery technology in a compact design focused on portability and compatibility. With dimensions of 140mm by 72mm by just 4mm, it maintains a slim profile that fits comfortably alongside phones and other essentials.

Material and Build

Constructed with a graphene battery core, this power bank offers 4000mAh capacity within its lightweight 154g frame. The graphene technology enables the slim 4mm thickness while maintaining functional battery capacity. The exterior features a silver finish that resists showing everyday wear while maintaining a clean appearance suitable for various environments.

Size and Practical Fit

Measuring 140mm in length, 72mm in width, and just 4mm in thickness, this power bank maintains dimensions comparable to many smartphones but with significantly reduced depth. The 154g weight ensures it doesn't add noticeable bulk to bags or pockets. This sizing makes it suitable for carrying alongside phones in protective cases or dedicated charger compartments of bags and organisers.

Uses and Placement

The power bank serves as backup power for smartphones during situations where mains charging isn't immediately available. Its slim profile and universal compatibility make it suitable for various scenarios requiring portable charging capability.

Event or Professional Use

During conferences, travel, or extended workdays away from power outlets, this power bank provides additional phone charging capacity. The slim 4mm design fits easily into briefcases, laptop bags, or document folders without adding bulk. With compatibility for both Apple and Android devices, it can serve as a shared charging resource in professional settings where different phone types are present.

Everyday Home Use

For daily use around the home or local travel, the 4000mAh capacity offers practical charging support when sockets are occupied or inconveniently located. The lightweight 154g build makes it comfortable to carry in pockets during shopping trips, visits, or outdoor activities. The silver colour blends with various personal items without drawing unnecessary attention during casual use.

Benefits and Buying Value

This power bank provides practical charging capability through specific technical specifications and physical design choices that prioritise portability and compatibility.

Reuse and Low Maintenance

The graphene battery construction supports repeated charging cycles with standard 5V input. With approximately 3-hour charging time from empty when using compatible chargers, it maintains practical usability for regular charging routines. The device requires minimal maintenance beyond standard charging practices and proper storage away from moisture or extreme temperatures.

Why Choose This Product

The 4mm thickness represents a notable reduction compared to many standard power banks, making this option particularly suitable for those prioritising slim profiles in their portable electronics. The 4000mAh capacity provides meaningful charging support for smartphones while maintaining the lightweight 154g construction. Compatibility with both Apple and Android devices through standard USB connections ensures broad usability across different phone types without requiring multiple chargers.