The EN-EL18b Rechargeable Lithium-Ion Battery is compatible with the Nikon D4, D4S, and D5 DSLR cameras. It serves as a spare or replacement for the original battery supplied with the cameras. The EN-EL18b features 10.8V of output power, a 2500mAh capacity, and a 27Wh energy consumption rate. Lithium-ion cells can be charged or discharged at any time without developing the memory effect.
