The Ansmann NiZn batteries (Nickel-Zinc) meet the highest standards and offer a higher voltage and energy density compared to standard NiMH batteries. There are many devices, such as flashlights, model remote controls, and measuring instruments, that only operate with the higher voltage of a comparable primary battery. The higher voltage also allows for a longer shelf life in various applications. The batteries can be charged with a high current, enabling very short charging times.