Rayovac CR2 Lithium Batteries - RLCR2-2G (2 per pack)
Everything You Should Know About CR2 Battery
Duracell CR2 Battery - 3V High Power Lithium Batteries - 2 Count (1 Pack) - 3 Volts Long-Lasting Lithium Battery for Video and Photo Cameras, Lighting Equipment, and More : Amazon.ca: Electronics