6 X Duracell DL2450 Lithium Coin Battery, 2450 Size, 3V, 540 mah Capacity - Walmart.com
Duracell DL2450BPK Battery, Lithium, Size DL2450, 3V, 6/bx (UPC# 66186) (Item is considered HAZMAT and cannot ship via Air or to AK, GU, HI, PR, VI) Sold as bx
Energizer Lithium Cr2450 Coin Batteries in the Coin & Button Batteries department at Lowes.com