Opteka Battery Pack Grip / Vertical Shutter Release for Canon EOS 20D, 40D, & 50D Digital SLR Camera Includes IR Remote Shutter Release, 2 BP-511 Batteries (4000mAh Total), 1 Hour 110/220v Ac/Dc Rapid Charger And More! Includes IR Remote Shutter Release, 2 Opteka BP-511 2000mAh batteries for maximum shooting time Dual shutter control for easy vertical shooting Tripod mountable Includes AA & Lithium Battery Trays 1 Year warranty