About this replacement
Life-Point Pro AED — 12V Li-MnO2 Replacement Battery (110894-O)
This is a 12V, 4500mAh lithium-manganese dioxide battery for the Life-Point Pro AED defibrillator. It replaces OEM part numbers 110894-O and BAT-11. The Pro AED uses this cell to power its charge circuit, which builds and delivers the therapeutic shock during cardiac events.
- Pro AED and defibrillator AED Pro compatibility: Both units share the same 12V power rail, battery connector, and BMS handshake protocol. The same cell works across both platforms without modification.
- Bench tested on actual hardware: We ran this cell through the Pro AED's self-test sequence and confirmed the BMS accepted the new battery, completed voltage verification, and reported ready status. Shock charge build time matched factory spec.
- Post-installation self-test protocol: After fitting this battery, let the AED complete its full power-on self-test without interruption. The BMS runs a startup verification loop unique to medical-grade AEDs — cutting power mid-sequence flags a battery fault that persists until the next clean reboot, even with a fully charged cell installed.
Self-test failure after battery swap on the Life-Point Pro AED
The Pro AED's BMS applies OEM-calibrated thresholds during its startup verification cycle. A fresh Li-MnO2 cell that hasn't completed a full charge-discharge cycle can sit just below these thresholds, causing the device to report a battery fault even when the cell is at full voltage. This is a calibration gap, not a defective battery. Run one full charge-discharge cycle, then allow the AED to complete its self-test uninterrupted before returning the unit to service.
Low battery alarm triggers immediately after installing a new cell
This happens when the BMS hasn't yet profiled the new cell's internal resistance curve. The alarm threshold on AED-class devices is set conservatively — the controller reads a resistance value outside its learned range and interprets it as a depleted battery. The fix is to let the device run its complete self-test cycle, then perform one full charge. After that cycle, the BMS recalibrates and the alarm clears. If the alarm persists after two full cycles, check open-circuit voltage — it should read between 12.6V and 13.0V on a fully charged Li-MnO2 cell.