F2-40BL Battery Technical Bulletin

This technical bulletin announces changes to the F2-40BL battery for MELSEC-F series programmable controllers, including a revised external appearance and increased lithium content (from 0.60g to 0.65g), effective from April 2022. The changes are made to ensure stable supply, do not affect battery life, but render the battery incompatible with the MELQIC data logging analyzer due to dimensional differences.