About this replacement
B.Braun Omni Infusion Pump — 24V Ni-MH Replacement Battery (M0430060002)
This is a 24V, 2700mAh Ni-MH replacement battery for the B.Braun Omni infusion pump. It restores portable operation and patient mobility when the original cell has degraded past the pump's minimum charge threshold. Voltage and chemistry match OEM specifications: 24V Ni-MH, 64.8Wh.
- Omni pump compatibility: The Omni's BMS handshake is tuned to 24V Ni-MH chemistry. This cell matches that voltage rail and connector pinout. Substituting a different voltage or chemistry will trigger a battery fault at startup and prevent infusion delivery.
- Bench tested on actual hardware: We ran a full charge-discharge cycle and confirmed the BMS completed its self-test sequence without fault. The cell passed the pump's battery verification routine and held voltage within the Omni's operating window under simulated load.
- First-cycle self-test protocol: After installation, let the pump complete its full power-on self-test without interrupting power. Medical BMS verification at startup reads the new cell's charge state and chemistry signature — cutting power mid-sequence logs a false battery fault that persists until the next complete reboot cycle.
Why the Omni pump alarms low battery immediately after a confirmed full charge
The Omni's charge IC applies a conservative acceptance threshold on the first cycle with a new Ni-MH cell. The cell may read full on the charger but the BMS has not yet built a charge-capacity baseline for it. Until one complete charge-discharge cycle is logged, the pump's battery monitor can flag a low threshold alarm even on a fully charged pack. Run one full cycle before relying on the battery for clinical use — the alarm clears once the BMS calibrates to the new cell's actual capacity.
Omni pump not completing boot sequence after battery sat in storage
Ni-MH cells self-discharge at roughly 1–2% per day in storage. A cell that has been sitting can drop below the Omni's BMS recovery threshold — typically around 18–20V on a 24V pack — and the pump will refuse to boot rather than risk operation on an unstable voltage rail. Connect the pump to mains power first and allow the charge IC to bring the cell up from its resting voltage before attempting a standalone boot. Once the cell reaches approximately 22V, the BMS will allow the boot sequence to proceed.