Duracell has released their new range of StayCharged batteries, which are specially designed to retain their charge for longer when not in use.Standard rechargeable batteries will lose their power after two or three weeks, which means that even after a short period of storage their performance will start to decay quite dramatically. StayCharged batteries, however, will retain up to 80% of their power after a year, which gives consumers an added level of convenience and flexibility.Combining the convenience of disposable batteries with the cost-effectiveness of rechargeables, StayCharged batteries are the obvious choice for battery users seeking both power and performance.