Pack of 2 EN-EL18 Batteries for Nikon D4, D4S, D5 Digital SLR Camera + More!! ENEL18 EN-EL18 Li-ion Rechargeable Battery for Nikon D4, D4S, D5 Digital SLR Camera Battery Specifications - Energy Storage Capacity: 2800 mAh /Voltage: 10.4 volts, Chemistry: Li-ion 100% Memory Free Super Long Time Recording battery has a one-year warranty This battery is fully decoded and will function just like an original Nikon ENEL18 Battery Includes Qty 2 ENEL18 Batteries + LCD Screen Protectors + Micro Fiber Cleaning Cloth