The Nikon EN-EL15b battery is a rechargeable lithium-ion battery that is designed for use in select Nikon cameras, including the Z6, Z7, D780, D850, and D7500. It has a capacity of 2200 mAh, which is slightly higher than the capacity of the original EN-EL15 battery. This means that the EN-EL15b can provide longer battery life for your camera.
