Nickel Metal Hydride Batteries Panasonic Batteries Nickel Metal Hydride Batteries offer up to three times the capacity of same-size standard nickel-cadmium batteries. The increased capacity and energy density result in longer running times and longer time between charges. These NiMH batteries are ideal for two-way radios, power tools, test equipment, and digital cameras. Panasonic NiMH batteries are suitable for applications that demand high-energy usage yet require a small size.