Change batteries in your camera so your camera doesn’t die at the most crucial times. Batteries can be a source of frustration for an avid user of a digital camera. Depending on the type of battery (Ni-MH, Lithium Ion, NiCD) being used and the camera using it.
Look at your camera's manual. If you still have the documentation to your camera, this can prove very helpful. It might have the part number for your battery in it. From there, you can go to any number of web sites, such as ebay.com, or tigerdirect.com or even something as simple as to type in the part number in quotes into a search engine. If not, do the following:
Refreshing - Some battery chargers can 'refresh' the battery by reviving the cells of the battery. Consult your manual for instructions on how to do this. Some batteries recommend a refresh every 20-30 charges to keep them fresh.