A:Answer The length of life of the batteries depends on storage, camera use, and type of batteries. For videos, you can get approximately 1 hour and 30 minutes of use when using alkaline batteries, 4 hours and 30 minutes of use when using lithium batteries and 2 hours and 35 minutes when using EN-MH2 batteries with the Nikon COOLPIX B500 digital camera. These are all approximations based on personal consumer use of the camera and type of battery brand used.