Batteries
Nikon 1900 mAh Lithium Ion Rechargeable Battery for D800/D600/D7100/D7000
Compact rechargeable lithium-ion battery High capacity for long operating life (7.0V 1900 mAh) Consistent power, even in colder conditions
https://www.bizrate.co.uk/batteries1/nikon-1900-mah-lithium-ion-oid31171783979.html