Panasonic Coin Cell Battery Suffixes
Example: BR1220/BE
B: Bare Cell
N: Export outside of Japan (Newer designation replacing E)
E: Internal reference for ‘export’ from manufacturers location
K: Sold within Japan
Other suffixes to indicate various packaging options:
Z: Upside Down Orientation
D: Non-nickel Plated Cell
Panasonic Lithium Handbook
Battery Model Number
Pg. 16
Tab Configurations
Pg. 89 (Panasonic Lithium Handbook)
Example: BR-2032/GUN
Battery Tab Lineup
https://industrial.panasonic.com/content/data/BT/docs/edbd/lithium/202006LithiumBatteryTabLineup_byCell_WW.pdf
Resource for a lot more information