Opteka is proud to be allowed to use the same factory and mold as Canon uses for their BG-E9. Opteka is one of the world's leading producers of high-performance batteries and accessories. Opteka believes there is no limit to the potential of portable power, and as a company they will always strive to find innovative and efficient ways to power your life in the future! The Opteka BG-60D holds 6 AA Batteries or 2 LP-E6 batteries. This provides a extremely extended shooting time. The vertical shutter release also makes shooting with the camera in a vertical position just as comfortable as shooting horizontally.The high-capacity Opteka LP-E6 rechargeable lithium-ion 2400mAh battery is a replacement for Canon LP-E6 Battery. It features lithium technology, which ensures maximum battery life and maximum power. It also features no memory effect that lets you recharge partially drained batteries without reducing performance. Beware of low quality knockoffs on the Market, they can often damage your camera. Opteka Batteries are Guaranteed.