Pixel Vertax D17 Professional Battery Grip for Nikon D500 Compatible with EN-EL15 Battery and AA Battery(Replacement for Nikon MB-D17) 1.Pixel Vertax D17 is a newly released product specially designed for Nikon D500 cameras. 2.Vertax D17 battery grip can hold one EN-EL15 Battery or 8pcs AA batteries,it extends the shooting time effectively. 3.Designed with shutter release function(AF-ON button).enable shooting in the same way as a horizontal grip 4.Designed with a tripod jack on the bottom,enables to fix a tripod stably and firmly. 5.please note:This package come without battery,it can not work with nikon bl-5 and en-el18a battery.The original battery is better.AA battery is not stable as original battery.