 "Canon BG-E16 - battery grip" " Canon grip 9130B001 Digital Camera Accessories CDW.com
"The battery grip BG-E16 features a variety of controls such as a shutter button, main dial, multi-controller, AF point selection button, AE/FE lock button, AF start button, and multifunction button making it ideal for vertical shooting." 
 "Canon BP-828 - camcorder battery Li-Ion" " Canon Li-Ion 8598B002 Video Camcorder Batteries CDW.com
"Take advantage of uninterrupted power with this rechargeable Lithium-ion battery. Lithium-ion batteries last longer and are resistant to the effects of "memory effect", meaning you can charge and recharge your battery without fear of draining the battery. Times vary depending on camcorder and shooting conditions." 