COMEN Star 8000 10.8V Replacement Battery 022-000084-00

Cardiomonitor COMEN Star 8000 Series — 10.8V Li-ion Replacement Battery (022-000084-00)

This 10.8V 2600mAh Li-ion battery replaces the OEM pack in the COMEN Star 8000 and Star 8000 E patient monitors. These are clinical cardiac monitoring devices used to continuously display heart activity and vital signs at the bedside. Voltage and cell format match the original specification exactly.

• Star 8000 and Star 8000 E compatibility: Both models share the same power rail, connector pinout, and BMS handshake protocol. The 8000 E adds expanded parameter modules but draws from the same battery bay, so one cell pack covers both variants without modification.
• Bench tested on actual hardware: We cycled this pack through the Star 8000's startup sequence and confirmed the BMS completed its internal verification pass. Cell voltage held within the monitor's accepted window from cold start through full operating load.
• Post-install startup protocol: After fitting this battery, allow the monitor to complete its full power-on self-test without interruption. The Star 8000 runs a BMS verification step at boot — cutting power during this sequence triggers a false battery fault that persists until the next clean reboot cycle.

Low battery alarm on the Star 8000 after a confirmed full charge

The Star 8000's BMS compares cell discharge curves against a stored OEM profile to estimate remaining capacity. A new replacement cell has no learned curve yet, so the monitor reads the unfamiliar profile as low-capacity and triggers an alarm even at full charge. This is not a fault with the battery. Run one complete charge-discharge cycle to let the BMS accumulate enough data to recalibrate its estimate. After that single conditioning cycle, the alarm should clear and the indicator should read accurately.

Star 8000 will not power on after the replacement battery sat in storage

Li-ion cells self-discharge during storage, and the Star 8000's BMS will refuse to initialise if it reads cell voltage below its recovery threshold — typically around 9.0V for a 3S pack at this chemistry. The monitor shows nothing at all: no boot screen, no alarm. Connect the charger and leave it undisturbed for at least two hours before attempting to power on. Once the cells recover above the BMS recovery floor, the monitor will boot normally.