Rhino Wind-up Radio

Never buy another battery for your trannie. The Rhino Wind-up radio is an AM/FM Radio that takes just 90 seconds winding to give an hour's listening. Fully charged it'll play for over 10 hours and, to help get it fully charged in the first place, it comes with its own mains charger.
It's even got a built-in torch and an optimum charge indicator. Can also run from regular batteries if required.