The cr2032 is the most popular 3v lithium coin cell from energizer it is 20mm in diameter 32mm thick weighs 31g and has a capacity of 2200m ah 2400m ah for use in calculators pagers watches and car key alarms replaces 2032 br2032 cr2032 dl2032 ea2032c ecr2032 l14 l2032 lf12v sb t15