NiMH Cell Rechargeable AA Batteries offer an economical choice for heavy daily use in high-drain devices such as PDAs, pocket TVs, digital phones & digital cameras. In a typical digital camera, alkaline batteries may only last from 20 to 40 minutes & can only be used once. These NiMH batteries last nearly 1-1/2 hours & can be recharged up to 1,000 times.