The MB-D80 battery pack adds extended shooting capability in an ergonomic design that adds shooting stability. Able to run on either one or two EN-EL3e batteries or six AA-size batteries*, it also features additional command dials and alternative buttons for shutter release and AE-Lock/AF-Lock that make vertical shooting more comfortable. Approx. 2,500 shots with one EN-EL3e and approx. 5,000 shots with two EN-EL3e batteries. *Compatible AA-size batteries comprise alkaline, Ni-MH, lithium and nickel-manganese batteries.