Panasonic CR-P2 (223A) 6 Volt Lithium Battery (On a Card) - Walmart.com
Amazon.com: Duracell 223-6V Lithium-Battery, 1 Count Pack, 223 6 Volt High Power Ultra Lithium-Battery, Long-Lasting for Video and Photo-Cameras, Lighting Equipment, and More : Electronics
Amazon.com: hflexgrad (5-Pack) 6V 1500mAh Lithium Photo Battery Replaces 223A, 2CR-P2, EL223AP, and DL223A Batteries : Health & Household