SANYO technology enables Eneloop batteries to enjoy very low self discharge rates compared to traditional rechargeable batteries. While normal rechargeable batteries lose their charge over time, SANYO's Eneloop technology enables these batteries to keep 85% of their charge over one year. No more constant recharging. Eneloop can be left in your digital camera or flashlight and will be ready to go when you are. Unlike traditional rechargeable batteries, Eneloop batteries are precharged and can be used immediately out of the package - no longer the need to go home and charge before use. Finally - the convenience of an alkaline battery in a rechargeable battery.