BluePlanet Green Energy Battery Charger & 4 AA Rechargeable Alkaline Batteries Includes 4 AA Recycleable Mercury and Cadmium FREE Rechargeable Alkaline Batteries 1 Rechargeable Alkaline Replaces up to 100 Single Use Alkalines 1000's of hours of use - recharge 100+ times with no power loss. Holds its charge longer with full 1.5V power, just like a regular AA Alkaline Battery Charger also works with rechargeable AAA batteries Pre-Charged Ready to Use with 7 Year Shelf Life