DL223A/CR-P2 Battery Holder for 6 volt lithiums from Memory Protection Devices, Inc.
CR-P2 | Panasonic Industry Europe GmbH
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 : Health & Household
Panasonic CR-P2 (223A) 6 Volt Lithium Battery (On a Card) - Walmart.com