The Newell EN-EL18 Li-Ion 2600 mAh battery with no memory defect. It is compatible with all chargers (orginal and equivalent). With using Newell batteries your camera is completely safe.

List of compatible equipment:

• Nikon D4, D4s, D5

Specification:

• model: EN-EL18
• technology: Li-ion
• capacity: 2600 mAh /28.1 Wh
• output voltage: 10.8 V
• compatible with battery chargers (original and equivalent)