About this replacement
Kangaroo 924 Enteral Feeding Pump — 7.2V Ni-MH Replacement Battery (B11767)
This is a 7.2V, 2000mAh Ni-MH replacement battery for the Kangaroo 924 Enteral Feeding Pump. It fits directly using OEM part number B11767. The battery powers the pump's motor and control electronics during portable, ambulatory use away from mains power.
- Kangaroo 924 platform fit: The 924 pump uses a fixed 7.2V Ni-MH cell architecture. The BMS expects Ni-MH charge curves specifically — voltage rise rate and termination delta-V are calibrated to this chemistry. Swapping to a different chemistry is not supported by the pump's charge IC.
- Bench tested on actual hardware: We ran this cell through the 924's charge and run cycles on the bench. The BMS accepted the cell without fault codes, completed charge termination at the correct delta-V, and the motor load profile showed stable voltage delivery across the discharge curve.
- Post-installation self-test cycle: After fitting this battery, allow the 924 to complete its full power-on self-test without interruption. The pump runs a BMS verification routine at startup. Interrupting it mid-sequence can trigger a false battery fault flag that persists until the next complete reboot cycle.
Why the Kangaroo 924 alarm trips low battery on a freshly charged new cell
The 924's BMS compares the cell's internal resistance and voltage recovery profile against thresholds set for a conditioned OEM cell. A new, uncycled Ni-MH cell has higher internal resistance and a slightly compressed voltage window until it is broken in. The pump reads this as a weak cell and triggers the low battery alarm even at full charge. Running one complete charge-discharge-recharge cycle conditions the cell enough for the BMS to pass it. After that first full cycle, the alarm clears and normal operation resumes.
Kangaroo 924 won't power on after the replacement battery was stored before fitting
Ni-MH cells self-discharge at roughly 1–2% per day in storage. A cell that has sat for several weeks can drop below the 924's BMS recovery threshold — typically around 5.5V for a 7.2V pack — at which point the pump will not boot. Connect the pump to mains power first and leave it on charge for a minimum of 30 minutes before attempting to power on. This allows the charge IC to trickle charge the cell back above the BMS recovery floor before the full charge cycle begins.