About this replacement
Mindray iMEC8 / iMEC10 / iPM8 / iPM10 — 11.1V Li-ion Replacement Battery (022-000383-00)
This 11.1V 4500mAh Li-ion battery replaces part numbers 022-000383-00, 115-018012-00, 115-018014-00, LI131001A, and LI13I001A. It fits the Mindray iMEC8, iMEC10, iPM8, and iPM10 portable patient monitors, along with sixteen additional compatible models in the same monitor family. Capacity is 49.95Wh, matching the original power specification.
- iMEC and iPM series compatibility: These models share the same 11.1V three-cell architecture, connector pinout, and BMS communication protocol. A single replacement cell works across the platform because the charge IC and BMS handshake requirements are identical across this monitor generation.
- Bench tested on actual hardware: We cycled this cell through the iMEC8 charge-discharge sequence and logged BMS communication at each stage. The protection circuit responded correctly to the monitor's charge termination signal and held cutoff voltage within spec under a simulated clinical load profile.
- Post-installation self-test: After fitting this battery, allow the monitor to complete its power-on self-test without interruption. The iMEC and iPM series run a BMS verification routine at startup — cutting power during this sequence registers a false battery fault that will persist until the next full, uninterrupted reboot.
Charge indicator stalling below 100% on the first charge cycle
The iMEC series charge IC applies a conservative current limit when it detects a new or previously unrecognised cell. This causes the charge percentage to plateau — typically between 85% and 95% — on the first charge attempt. It is not a fault. Run one complete charge-to-discharge-to-full-charge cycle and the charge IC recalibrates its current profile. After that first cycle, the indicator will advance normally to 100%.
Monitor alarming low battery immediately after a confirmed full charge
The iMEC and iPM BMS compares cell state-of-charge against a threshold tuned to the original factory cell's internal resistance. A new cell with a different initial resistance value can read as low charge even when the cell is physically full. This alarm clears after one complete charge-discharge cycle, which allows the BMS to build an accurate resistance baseline for the new cell. Run that conditioning cycle before returning the unit to clinical duty — verify the resting voltage reads 12.4V or above before deployment.