Lithium cell, 3 volt, CR series, manganese dioxide, for applications requiring high voltages and strong impulse discharge properties. Advantages: long shelf life and a constant voltage. https://elecena.pl/product/18583261/lithium-button-cell-battery-3-volt-265-mah-23-0x3-0-mm 2021-05-26 https://elecena.pl/product/18583261/lithium-button-cell-battery-3-volt-265-mah-23-0x3-0-mm 2022-05-21