Batteries on trail cameras can last a surprisingly long time. Each camera will vary from one another depending on the number of batteries it can hold versus the features the camera provides. The more features you have, the shorter battery life you can expect.  Camera manufacturers put an emphasis on battery life when developing these cameras, which is why many cameras in today's market use complex infrared imaging technology. This infrared technology keeps the camera in a low power state, ready to trigger additional features as they are needed. Some cameras can take up to 15,000 images on a fresh set of batteries. While not included on this list, most manufacturers have an optional solar accessory to provide direct power to the camera, circumventing the need even to use batteries.