Battery for headsets. Compatible replacement battery, not an original battery from the manufacturer! Refer to the device and battery numbers listed to select the right battery for your device! Replacement battery suitable for: Plantronics: CS540, CS540A, Savi CS540, Savi CS540A Identical to the following batteries: Plantronics: 84479-01, 86180-01 https://elecena.pl/product/18577084/30086-battery-for-plantronics-cs540-li-po-140-mah 2021-05-26 https://elecena.pl/product/18577084/30086-battery-for-plantronics-cs540-li-po-140-mah 2022-06-09 https://elecena.pl/product/18577084/30086-battery-for-plantronics-cs540-li-po-140-mah 2025-01-25 https://elecena.pl/product/18577084/30086-battery-for-plantronics-cs540-li-po-140-mah 2026-02-09