Pentax D-BH109--Use AA batteries with your PENTAX K-r camera! Your K-r ships with a Li-Ion battery and charger, but this AA Battery Holder allows you to also use AA batteries with your camera. Never find yourself without access to power when you"re on vacation, traveling or when you otherwise find yourself nowhere near a power outlet. Standard AA batteries are available throughout the world. Holds 4 AA lithium or alkaline batteries.