Battery grips are an extension for your Canon digital camera. The canon battery grip extends your Canon SLR and DSLR cameras battery life by adding an additional battery pack to the bottom of your digital camera. You can double the battery life of your camera, doubling the amount of pictures you can take. They are vertically inserted into your camera making it easier to grip and hold.
There are two types of battery grips for Canon Cameras. There is a battery grip that is compatible with Canon EOS Digital Rebel XS, 1000D, XSI, 450D, T1i, 500D digital cameras. There is also another battery grip for Canon EOS 20D, 30D, 40D, and 50D digital cameras.
Professional photographers are raving about these ingenious devices saying they cannot shoot photos without them. It makes it easier and more convenient to have a spare battery pack in your camera, rather than in your camera bag. It can make or break missing that important shot. It is nice to give your camera two extra batteries or six AA rechargeable batteries.