About this replacement
COMEN C100 Monitor — 14.8V Li-ion Replacement Battery (022-000091-00)
This 14.8V, 2600mAh Li-ion battery replaces OEM part 022-000091-00 in the COMEN C100 and C58 patient monitors. These are portable clinical devices used for continuous vital sign monitoring at the bedside. Voltage and capacity match the original specification exactly.
- C100 and C58 platform fit: Both monitors share the same battery bay, connector pinout, and 14.8V four-cell Li-ion configuration. The BMS handshake protocol is identical across the platform, so one part number covers both units without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the C100 platform. The BMS accepted the cell on first insertion, passed the device self-test, and the charge indicator progressed normally through all stages to full.
- First-cycle self-test protocol: After installing this battery, allow the C100 to complete its power-on self-test sequence without interruption. The monitor runs a BMS verification routine at startup. Interrupting it before the sequence finishes causes a fault flag that persists until the next full reboot — not a battery defect.
Why the C100 alarms low battery immediately after a confirmed full charge
The COMEN C100 sets its low-battery alarm threshold against BMS state-of-charge data, not raw voltage alone. A new cell that hasn't completed a full charge-discharge cycle hasn't calibrated its internal resistance profile, so the BMS reports lower capacity than the cell actually holds. The monitor sees that uncalibrated state-of-charge figure and triggers the alarm. Run one complete charge-discharge cycle before clinical use — the alarm clears once the BMS has a valid baseline.
C100 will not power on after the replacement battery sat in storage
Li-ion cells self-discharge during storage. If the cell drops below the C100's BMS recovery threshold — typically around 2.5V per cell, or 10V pack voltage — the monitor refuses to boot. This is a protection cutoff, not a failed battery. Connect the monitor to mains power and leave it on charge for a minimum of 30 minutes before attempting to power on. The charge IC will trickle-charge the pack back above the recovery threshold, and the device will boot normally.