Mindray Benevision N19 Compatible Battery 11.1V 5600mAh

Mindray Benevision N19 / SV650 Series — 11.1V Li-ion Replacement Battery (022-000248-00)

This 11.1V 5600mAh lithium-ion battery fits the Mindray Benevision N19, Benevision N22, SV600, and SV650 patient monitors. It replaces OEM part numbers 022-000248-00, 022-000348-00, 115-034132-00, and LI23I003A. The battery slots into the monitor's rear battery bay and interfaces directly with the onboard BMS to power continuous vital signs monitoring.

• Benevision and SV-series compatibility: The N19, N22, SV600, and SV650 share the same 11.1V three-cell Li-ion architecture, connector pinout, and BMS communication protocol — which is why a single cell pack covers the full range. The battery reports state-of-charge data over the SMBus interface to the monitor's power management controller.
• Bench tested on actual hardware: We cycled this cell on an SV650 test unit and confirmed the BMS handshake completed on first connection, the charge IC accepted the pack without fault codes, and the monitor's battery status screen reported accurate state-of-charge after one full charge-discharge cycle.
• Post-swap self-test protocol: After fitting this battery, let the monitor complete its full power-on self-test without interrupting the boot sequence. The Benevision platform runs a BMS verification pass at startup — cutting power mid-sequence registers a spurious battery fault that persists until a clean reboot is completed.

Low battery alarm triggering on a freshly charged replacement pack

The Benevision N-series sets its low-battery alarm threshold against a calibrated state-of-charge profile stored in the BMS. A new cell's internal resistance and open-circuit voltage differ slightly from the OEM profile until one full charge-discharge cycle has been logged. During that first cycle the monitor may read the pack as lower than it actually is and trigger the alarm prematurely. Run one complete charge-to-discharge cycle before using the monitor clinically — after that cycle the BMS recalibrates and the alarm threshold tracks correctly.

Monitor will not power on after battery has been sitting uninstalled

Li-ion cells self-discharge during storage, and the Benevision BMS enforces a hard undervoltage lockout below approximately 9V (3V per cell) to protect the cells from damage. If the pack sat uninstalled long enough to drop below that threshold, the monitor will not boot — it won't even attempt the self-test. Connect the monitor to mains power first, leave it connected for at least 15 minutes to allow the charge IC to raise the pack voltage above the lockout threshold, then power on normally.