Mindray LI13S001A 11.1V 2600mAh Replacement Battery

Mindray BeneHeart R3 Series — 11.1V Li-ion Replacement Battery (LI13S001A)

This 11.1V 2600mAh Li-ion battery replaces the OEM LI13S001A cell pack in the Mindray BeneHeart R3 and BeneHeart R3A portable defibrillators, as well as the uMEC10 patient monitor. It also fits the BeneHeart R3 EKG variant. Same voltage rail, same connector, same BMS communication protocol as the original.

• BeneHeart R3 and R3A platform fit: These models share a common battery bay geometry, 11.1V three-cell series configuration, and the same BMS handshake over the SMBus contact array. One part number covers both defibrillator variants and the uMEC10 monitor without modification.
• Bench tested on actual hardware: We cycled this cell pack through charge-discharge on a BeneHeart R3 unit. The BMS accepted the new chemistry, completed state-of-charge calibration on the second cycle, and charge current tapered normally at end-of-charge without triggering a fault flag.
• Post-swap self-test protocol: After installing this battery, do not interrupt the BeneHeart R3 power-on self-test sequence. The device runs a BMS verification routine at startup — cutting power mid-sequence stores a false battery fault code that persists until the next full reboot cycle.

BMS learn cycle on the BeneHeart R3 after a new cell install

The BeneHeart R3 BMS tracks state-of-charge using coulomb counting calibrated to the original cell's charge curves. A new cell pack starts with no learned capacity data, so the first one or two charge readings may appear inaccurate or conservatively low. Running one full charge-discharge cycle lets the BMS recalibrate its end-of-charge and end-of-discharge thresholds to the new cell. Do not place the device into active clinical rotation until that first full cycle is complete and the charge indicator reads 100%.

Low battery alarm triggers immediately after a confirmed full charge

This happens when the BMS evaluates the new cell against OEM chemistry thresholds before a learn cycle has run — the state-of-charge register reads lower than actual because the coulomb counter has no baseline for the new pack. The device interprets this as a depleted cell and raises the alarm even though the battery is physically full. Run one complete charge-discharge cycle without interruption. After that cycle, verify the resting voltage reads above 12.0V before returning the device to standby.