The NiMH AA-cell has an impedance of 25milliohms, while the NiCd Sub-C has an impedance of 6 milliohms. While NiMH AAs could show an initial improvement over the older, well-spent NiCd battery — ...

Compare a nickel metal hydride (NiMH) battery. At 1.2V per cell, ten cells would be the obvious choice for a 12V battery. However, many NiMH cells are only really fully discharged at perhaps 0.9V, ...