The accessory is compatible with Android, Windows Phone and BlackBerry handsets, and is available now to pre-order online.
The ChargeGenie is a 1400mAh battery that attaches to the back of compatible devices to provide an emergence power source on the fly.
It docks with the user's phone via a Micro-USB cable, meaning popular smartphones including the Samsung Galaxy S3, Nokia Lumia 920 and the BlackBerry Bold will be supported.
Featuring a flexible spine that adjusts to take on the shape of the mobile, the ChargeGenie features five LED lights on its body to keep tabs on power levels.
The ChargeGenie is now available to order online for £24.99.