This is a multi-purpose battery for Canon EOS 5D. It has shutter buttom and AE-L/AF-L buttom and is made of high-powered PC+GF10 material. Its capacity is 3600mAH which is twice of the capity of original battery. It can take 1800 photos after charged one time. It can make your camera steady and professional, and convenient for shooting vertically, and its longtime electric power supply must satisfy your needs. Product Features: 1.Use PC+10%GF material,more comfortable. 2.Accommodate two lithium batteries and six AA batteries. 3.Good function of exposure control. 4.Vertical-grip shutter button and main dial. 5.The same as original battery in quality,design and function.