ANSMANN HYBRID 2850 MAH AA NIMH RECHARGEABLE BATTERY. 

The best just got better.  Now you can have the highest true capacity available in a AA battery with the convenience of low discharge.

High capacity batteries are great, but they suffer from high self-discharge - as much as 60% per month -- which means you have to leave them on the charger to maintain 100% capacity. The new Ansmann HYBRID 2850 mah only loses 5% of power per month. More than 10x less the standard 2850. 

Plus, when used with high drain devices, you can achieve up to 1000 recharges, instead of 300. 

• Strongest and longest rechargeable batteries on the planet.
• Just 5% per month self-discharge
• Great for wireless mics, digital cameras and more.
• Engineered for long run-time and high recycles.
• Why use alkaline batteries when you can get up to 1000 recycles with this high capacity rechargeable battery? 
• Cost a little more than consumer grade, but yields up to 1000 recycles instead of a 100
• 2-year warranty.
• Buy a bundle and save money