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Page last updated at 12:41 GMT, Friday, 11 January 2013

AA battery 'powers mobile phone for 15 years'


It always seems to be when a phone is needed most that its battery decides to die but one company believes a spare device could be the answer.

Dan Simmons looks at a phone which runs on a single AA battery and can last - if it is left off until needed - 15 years without running out.

Also, Marc Cieslak looks at a how one device can make a phone feel all shook up.

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