It may be a good idea to get yourself a surge protector if you are using a lot of electrical equipment in your digital photography. Surge protectors are appliances that are aimed at protecting your electrical devices from power surges and voltage spikes.
It may be a little complicated to explain how they specifically work, but basically a surge protector's job is to try and regulate the amount of voltage reaching an electric device by blocking or shorting to ground voltage above a safe threshold. The protector basically takes the brunt of the surge before it gets to your other components. They are useful items to have to protect your electrical devices against things such as lightning strikes as lightning. Power surges can damage or destroy electronic equipment and changes in voltage can cause lockups and loss of work.
Although your digital camera works on batteries you may find yourself using electricity for downloading your images onto a disk or a computer and for recharging batteries among other things Surge protectors come in assorted shapes, sizes and styles. They can range in price from about $25 to several hundred.