Kodak CR1/3N Lithium Camera Battery.

Also known as: 2L76, K58L, DL1/3N, 5018LC, CR11108, CR1/3N. The CR1/3N or
2L76 is a popular lithium cell that is commonly used in cameras. The CR1/3N cells
have a shelf life of 10 + years, so why not buy two or more. The CR1/3N or 2L76
cell can be used as an effective high power replacement for a stack of two LR44 cells.