The Sony DSC F505V came with one NP-FS11 battery. I ordered another one right away as I knew it would be needed.Recently, I wast taking a lot of flashes and the battery ran out. Which probably is normal as flash must use a lot of battery power. I feel I need another one to have "just in case".Generally, the camera gives me plenty of warning on low battery.If there is a better battery for this camera, I would like to know about it.I really like my camera.