It can be somewhat annoying when you are out an about and have need of using your smartphone, only to find that your battery is running low. This is where the iJuice Excel battery case for the iPhone 4 comes into play, which can charge your iPhone 4 no matter where you are as long as the battery pack has power.

The iJuice Excel battery case features a 1600 mAh battery that can deliver up to 7 hours of talk time, 18 hours of music playback and 265 hours of standby time; and to recharge the pack all you need to do is connect it to a USB port.

The iJuice Excel battery case also protects your beloved iOS smartphone from scrapes, knowcks and bumps, is certified for iPhone, and features an anti-slip finish whilst being a simple to fit two-piece case that hardy adds any bulk to the device.

The iJuice Excel battery case for the iPhone 4is available in both black and white from Mobile Fun and commands a price tag of £19.95 including VAT.