These batteries are excellent. They hold a charge for very long, either no use or in use, compared with batteries of different brands of conventional technology displaying a greater theoretical capacity. Here, the theoretical capacity seems very impressive, but the use was 800 "real" mAh.
Info for connoisseurs, this is actually Sanyo Eneloop (LA battery benchmark AA and AAA) rebrandés by Duracell. It's the same for Duracell Stay Charged AA 2000 mAh. Do a little research on the appropriate forums ...