The Farmstream Cameras can either be powered with

Mains 13A Standard socket (Camera comes with 3-pin plug and 0.5m Cable) 

12V Battery connectors (2Amp fuse) with 5m + 10m Extension Cable

Solar Kit System

Useful Links:

12V Battery Connection Cable:

5m Power Extension Cable: 

10m Power Extension Cable:

Details on powering via 12V Leisure Battery:

Details on powering via Solar Kit: