The Smart Cam requires 12 AA internal batteries. It can run on only 6, but the battery life will be significantly shorter. The Mini Cam and Data Cam both run on 8 AA batteries internally. Quality Alkaline batteries are the best option for the cameras. While longer battery life can be achieved with Lithium AA batteries, they are not usually cost effective.
All of our cameras have the ability to connect to external power sources. We sell a variety of connectors to connect external batteries. Any 12V battery can power the camera. Many users use the Power Pack, which is a self contained battery pack. Other users utilize batteries such as mower batteries, ATV batteries or even auto/marine batteries. With an external power source many users are able to run the camera all year long.