Aug 2010 Pure - Rechargeable battery pack Add a ChargePAK E1 rechargeable battery pack and listen to your PURE radio wherever you go. ChargePAKs are much more economical than regular batteries and significantly kinder to the environment, reducing the quantity of batteries that end up in landfill sites. Product Features: Easy to install – can be fitted in seconds Easy to use – just fit and forget Charges inside the radio, no separate charging unit required Increased battery life per charge over standard rechargeable batteries Replaces the need for throwaway alkaline batteries Provides up to 24 hours wireless listening