Canon BP-300 Vertical grip power extension

BP-300 Vertical grip for Canon EOS 30 and EOS 33 Vertical grip for Canon EOS 30 and EOS 33 Canon BP-300 Vertical grip is external battery pack dedicated to the Canon ELAN 7. Canon BP-300 Vertical grip can be used with either four AA-size batteries (alkaline, Ni-CD or NiMH) or two CR123A lithium batteries as an additional power source. Canon BP-300 Vertical grip also features, on the vertical grip, a shutter release button, on/off switch as well as an AE/FE Lock button for greater convenience of Canon EOS 30 and Canon EOS 33 with Canon BP-300 Vertical grip.