Back in February Nikon quietly introduced a new EN-EL18b lithium-ion battery for D4, D4s and D5 DSLR cameras. The new version has 10.8V of output power, 2500mAh capacity, and 27Wh energy consumption rate. The older EN-EL18 model had a 2000 mAh capacity, but the EN-EL18a was also 2500mAh. The new Nikon EN-EL18b battery is currently in … Continue reading The new Nikon EN-EL18b battery is now in stock