Primedic 97195 AED-M Replacement Battery 15.5V 7200mAh

Primedic AED-M / Heartsave Series — 15.5V Li-MnO2 Replacement Battery (97195)

This is a 15.5V, 7200mAh lithium-manganese dioxide battery for the Primedic AED-M defibrillator and compatible models in the Heartsave and Defimon XD3 lines. It replaces OEM part numbers 97195 and 97196. Li-MnO2 chemistry is specified for this device class because it holds a stable voltage curve under the high-current pulse loads that defibrillation discharge requires.

• AED-M, Defimon XD3, Heartsave 6 and 6S compatibility: These models share the same 15.5V power rail, physical form factor, and BMS handshake protocol, which is why a single cell pack services all of them. The connector pinout and BMS communication line are identical across the platform.
• Bench tested on actual hardware: We ran this pack through charge-discharge cycles on a Primedic-compatible test rig and confirmed the BMS completed its calibration sequence without triggering a fault code. Charge acceptance and termination voltage matched OEM specification at 15.5V.
• Post-swap self-test protocol: After fitting this battery, allow the device to complete its full power-on self-test without interruption. AED-M units run a BMS verification routine at startup — cutting power during this sequence logs a false battery fault that persists until the next clean reboot cycle.

Self-test failure after battery swap on the AED-M

The AED-M BMS compares the new cell's internal resistance and voltage signature against stored OEM thresholds at every startup. A fresh Li-MnO2 cell that has not yet completed a full charge-discharge cycle will often sit just outside those thresholds, triggering a self-test fault even though the pack is functional. This is a calibration gap, not a hardware fault. Run one complete charge-discharge cycle through the device before placing it back in service — after that cycle, the BMS updates its reference values and self-test passes cleanly.

Low battery alarm persisting immediately after confirmed full charge

This happens when the BMS charge IC applies a conservative upper voltage limit on a new cell during its first charge, resulting in a terminal voltage slightly below the threshold the alarm logic uses to clear the low-battery flag. The pack is not defective — it has not yet been allowed to reach full OEM charge termination voltage. Charge the unit a second time from a fully seated, confirmed connection and let the charge run to completion without interruption. After this second cycle, terminal voltage typically reaches 15.5V and the alarm clears.