M-256E: Replacement Batterry July 28, 2023 01:10 Updated Follow The Part number for the battery for the M-256E card is CR-2016. These can be obtained at electronic stores, as well as the Roland Parts department. Related articles Jupiter 8: Technical Specifications SO-PCM1: SO-PCM PCM Card List D-70: Initializing - Restoring the Factory Settings BL-1: Technical Specifications TD-7: Backup Battery Low Message