Alaris Medicalsystems 8000 Replacement Battery 12V 4400mAh

Alaris Medicalsystems 8000 Series — 12V Ni-MH Replacement Battery (145997-101-8000)

This 12V, 4400mAh Ni-MH battery replaces the internal power cell in Alaris Medicalsystems 8000 series infusion pumps, including the 8015, 8220, and 8001. It matches the OEM voltage and chemistry the pump's BMS expects. Use the product data capacity figure — 4400mAh — as the reference spec for this listing.

• 8000 series platform fit: The 8000, 8015, 8220, and 8001 share the same 12V battery bay, connector pinout, and BMS handshake protocol. A single cell design services the entire platform without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the 8000 platform and confirmed the BMS completed its verification routine without triggering a fault. Charge acceptance was consistent with OEM cell behaviour across all test runs.
• Power-on self-test after installation: After fitting this battery, allow the pump to complete its full power-on self-test without interruption. The 8000 series BMS runs a cell verification sequence at startup — cutting power mid-sequence causes a false battery fault flag that persists until the next complete reboot cycle.

Self-test failure after battery swap on the 8000 series

The Alaris 8000 BMS stores chemistry and charge-state data from the previous cell. When a new Ni-MH cell is installed, the BMS compares the new cell's internal resistance and charge profile against stored values from the old cell. If the new cell has not completed at least one full charge-discharge cycle, internal resistance reads high and the self-test throws a fault. Run one full charge cycle on the pump before placing the unit back into clinical rotation. This resets the BMS learn cycle and allows the pump to accept the new cell as valid.

Charge indicator not reaching 100% on first charge

On first charge, the 8000 series charge IC applies a conservative current limit to an uncharacterised cell — this is by design, not a fault. The indicator may plateau at 85–95% and stop climbing. The cell is not full at that point; the charge IC has simply hit its cautious upper threshold before the cell profile is established. Fit the battery, run the pump through a full discharge to the low-battery alarm threshold, then recharge completely. After that first full cycle, the charge IC maps the cell accurately and the indicator reaches 100%.