There are many different types of batteries that can be used to power a typical "point-and-shoot" digital camera. These include alkaline batteries, nickel-metal hydride batteries and proprietary batteries (in other words, batteries that are specifically designed to only work with one brand or model of camera). Because most digital cameras have to run an LCD screen in addition to all of their other features, they can use up battery power very quickly. That said, some batteries will power a digital camera much longer than others before they need to be recharged. Standard alkaline batteries will not allow the camera to last a long time, whereas nickel-metal hydride batteries are better equipped to provide long life for most digital cameras. Proprietary batteries are the best kind of battery you can buy for digital cameras because they are made specifically for the camera brand you own.
When looking for digital camera batteries, it's important to look for rechargeable batteries. Because cameras use up so much battery power, it's likely that the batteries will die at an inopportune time. Instead of having to rush out and get new batteries for the camera, you can simply recharge the batteries and place them back in the camera to take more pictures. Plus, you'll save money over time because you won't constantly be purchasing new batteries.
In order to get the most out of your digital camera batteries, you should take the batteries out of the camera when they are no longer in use. This will help preserve the batteries and prevent corrosion and leaking from the battery.
If you choose to buy proprietary batteries, it's a good idea to purchase more than one when you purchase the camera, so that you don't run into a scenario where your battery is dead and you can't find a replacement in short order. There is also the risk that the camera will become obsolete, which means the proprietary battery that goes with your camera may become obsolete, as well. When this happens, you will not be able to buy the battery and will have to invest in a whole new camera. If you have a backup proprietary battery, you will be able to keep the camera running longer.