Accessory company Mophie has announced its new juice pack helium, the first battery case for the iPhone 5 that went on sale last September. 

Known for its cases, Mophie has made the helium its thinnest and lightest juice pack ever by 13 per cent.

The company has packed 80 per cent more battery life with a 1500mAh battery into the case, adding six more hours of talk time, 30 extra hours of audio playback, and an additional seven hours of video playback, or seven hours of Wi-Fi internet use (six hours with 3G and LTE).

Read: Mophie Juice Pack Powerstation Pro review

The helium case charges through a microUSB connection and has a toggle switch for charging, LED battery life indicator and speaker ports for enhanced sound from the iPhone. 

"We always strive to set new benchmarks for excellence in the portable power category, and have accomplished that with the development and release of the juice pack helium, the world's first authentic battery for iPhone 5," said Ross Howe, VP of marketing at Mophie. 

The juice pack is available on Mophie's website for pre-order for £59.95 and is set to ship to customers on 19 February. 

Pocket-lint will have a review unit in the coming weeks!