About this replacement
Mindray PM60 / DPM2 — 3.7V Li-ion Replacement Battery (LI11S001A)
This 3.7V, 1800mAh Li-ion battery replaces the OEM cell in the Mindray PM60 pulse oximeter and the DPM2 patient monitor. It matches the original part numbers LI11S001A, M05-0100004-08, and 022-000008-00. Slot it into the same battery bay — the connector and BMS interface are unchanged.
- PM60 and DPM2 compatibility: Both devices run the same 3.7V battery rail and use an identical connector and BMS handshake protocol. That shared platform means one cell covers both units without any adapter or firmware workaround.
- Bench tested on actual hardware: We cycled this cell through the PM60's power-on self-test routine. The BMS accepted the cell, reported correct state-of-charge, and cleared all battery fault flags within the first full charge-discharge cycle.
- Post-swap startup protocol for the PM60: After fitting this battery, let the PM60 complete its full power-on self-test without pressing any buttons or cycling power. The device runs a BMS verification at startup — interrupting it locks in a false battery fault that won't clear until the next clean reboot.
PM60 alarming low battery immediately after a confirmed full charge
The PM60's charge IC applies a conservative state-of-charge threshold on first contact with a new cell. Until the BMS completes one full charge-discharge cycle, it can read the new cell as below the clinical use threshold and trigger a low battery alarm even at full capacity. This is a calibration issue, not a faulty battery. Run one complete charge-discharge cycle — charge to 100%, discharge in normal use until the device powers off — then recharge fully. After that cycle, the BMS tracks the cell accurately and the alarm clears.
PM60 fails to power on after the replacement cell sat in the box for several months
Li-ion cells self-discharge during storage. If the cell drops below roughly 2.5V before installation, the PM60's BMS trips its deep-discharge protection circuit and blocks power delivery entirely — the device shows nothing when you press the power button. Put the battery on charge for a minimum of two hours before attempting to power on the device. Most BMS protection circuits recover once the cell reaches approximately 3.0V, at which point the PM60 will boot normally and continue charging to full.