There are a number of things that could contribute to having a shorter battery life than our estimations:
Do not use zinc-carbon batteries with our cameras or swap out single batteries. To optimize power and performance only use fully charged lithium, alkaline or rechargeable NiMH batteries.
Our battery estimations are calculated using the camera factory settings. If you change white balance, add flicker filters, or adjust any other of your camera’s settings it can have an effect on your camera battery life.
Turning your camera on and off as well as using the LCD screen to adjust camera settings for extended periods of time can drain power. If you will be making big changes to your camera settings and require the use of your LCD for an extended period of time then we recommend using an external power source for the setup period so that you do not drain your batteries.
When everything is set up and good to go unplug your camera and it will switch to using battery power.
Check if your camera has the newest firmware version. The firmware version on your camera can be accessed by going MENU -> Setting -> More -> Firmware Version, please check that it matches up with the newest firmware version on our website
Your battery life can vary depending on the environment you are filming in. The estimations in our time lapse calculator are done under 77 °F (25 °C) conditions. Extreme temperatures can affect the longevity of your batteries. If you are planning to film in extreme heat or extreme cold please make sure you are using high quality batteries such as Energizer Ultimate Lithium Batteries which have been made to withstand temperatures from -40ºC to 60ºC. Low quality batteries are unable to withstand extreme temperatures and using them will result in drastically lower battery lives.
Your camera is not waterproof, filming outdoors will require using a waterproof housing such as the ATH110 or ATH2000 housings.
Frequent lighting changes can also affect the longevity of batteries and our battery life estimations have been calculated in a stabilized lighting environment.