Nikon EN EL 20 ANikon EN-EL20a - Reliable power for your cameraThe Nikon EN-EL20a is a compact, rechargeable lithium-ion battery with a capacity of 1,110 mAh and 7.2 V voltage. It offers reliable power for longer shoots and is compatible with Nikon 1 J1, J2, J3, J4, J5, S1, V3, AW1 as well as Coolpix A and P950 cameras. Weighing only 28 g, it is light and ideal as a spare or second battery.