About this replacement
Kangaroo Control Enteral Feeding Pump / Pump 324 — 7.2V Ni-MH Replacement Battery (5-7905, 5-7920)
This is a 7.2V, 2000mAh Ni-MH replacement battery for the Kangaroo Control Enteral Feeding Pump and Pump 324. It powers the pump motor and control board during portable enteral feeding. Fits devices cross-referencing OEM part numbers 5-7905 and 5-7920.
- Control Enteral Feeding Pump and Pump 324 compatibility: Both models share the same 7.2V Ni-MH battery architecture, connector pinout, and BMS communication protocol. The same cell fits either platform without modification.
- Bench tested on actual hardware: We cycled this battery through charge and discharge on the Kangaroo pump platform. The BMS accepted the cell, completed its verification handshake, and held voltage within spec across the full discharge curve.
- Post-swap power-on sequence: After installing this battery, let the pump complete its full power-on self-test without interruption. Medical device BMS firmware runs a verification cycle at startup — cutting power mid-sequence locks in a false battery fault that persists until the next clean reboot.
Low battery alarm triggering immediately after a confirmed full charge
The Kangaroo pump's BMS stores a learned capacity profile from the previous cell. When a new Ni-MH cell is installed, the BMS compares its resting voltage against the OEM threshold calibrated for an aged pack — a fresh cell at 7.2V nominal can read as "insufficient" until the learn cycle completes. This is not a fault with the replacement cell. Run one full charge-discharge cycle under normal pump operation, and the BMS recalibrates its low-battery threshold to match the new cell's actual voltage curve. After that single cycle, the alarm clears and does not return.
Pump fails to power on after the battery sat unused in storage
Ni-MH cells self-discharge during storage — a cell stored for several months can drop below the BMS recovery threshold, typically around 6.0V, which causes the pump to refuse to boot rather than attempt to run on an undervoltage pack. The BMS interprets this as a protection event, not a dead battery. Connect the pump to mains power first and allow the charger to pre-condition the cell for at least 30 minutes before attempting to power on independently. Once the cell voltage climbs above the BMS recovery threshold, the pump will boot and complete its self-test normally.