Button Cell Battery Battery Size 1216 Battery Chemistry Lithium Voltage - Batteries 3V DC Standard Battery Pack Size 1 Capacity - Batteries 25 mAh Battery Cross-Reference CR1216 DL1216 ECR1216 Drain Type - Battery High Drain Diameter 0.486 in Depth 0.059 in Max Operating Temp 158 Degrees F Min Operating Temp -22 Degrees F Standards ANSI Color Code No Code