Conrad energy rechargeable nizn 16v aa and aaa batteries conrad energy 252001 the conrad energy rechargeable nizn 16v aaa batteries are supplied in packs of 4 the batteries technology is nickel zinc and they fulfil the highest standards and have a higher voltage and volume energy in comparison to normal nimh rechargeable batteries the batteries are particularly powerful and are also ideally suited for high power consumers such as digital cameras and other high drain devices the higher v