About this replacement
Medex 2001 / 2010 Syringe Pump — 7.2V Ni-MH Replacement Battery (B10570)
This is a 7.2V 2000mAh Ni-MH replacement battery for the Medex 2001 and 2010 Syringe Pumps. It slots into infusion pumps used to deliver precise medication volumes during clinical therapy. Capacity is sourced from product data at 14.4Wh — do not substitute a higher-capacity cell without confirming charge IC compatibility.
- 2001 and 2010 compatibility: Both pump models share the same 7.2V battery bay, connector pinout, and BMS handshake protocol. A single cell revision covers both units — no adapter or wiring change needed.
- Bench tested on actual hardware: We cycled this cell through the pump's charge circuit and confirmed the BMS accepted the cell, completed its verification handshake, and held voltage within the pump's operating window under steady infusion load.
- Post-swap startup protocol: After installing this battery, let the pump complete its full power-on self-test without interruption. The BMS runs a chemistry verification at boot — cutting power during this sequence locks in a false battery fault that won't clear until the next complete reboot cycle.
Why the 2001 Syringe Pump alarms low battery immediately after a confirmed full charge
The pump's charge IC was calibrated to the original OEM cell's internal resistance profile. A new Ni-MH cell starts with slightly higher internal resistance, which the BMS reads as insufficient charge state. This triggers a low-battery alarm even when the cell is fully charged. One complete charge-discharge cycle lowers the cell's internal resistance to within the BMS acceptance window and the alarm stops appearing.
Pump won't power on after the replacement battery sat in storage
Ni-MH cells self-discharge during storage. If this battery has been on the shelf, its resting voltage may have dropped below the pump's BMS recovery threshold — typically around 6.0V for a 7.2V pack. At that level, the pump's protection circuit blocks startup entirely rather than risk an undervoltage condition during infusion. Connect the battery to the pump's charger and allow a full uninterrupted charge cycle before attempting power-on. Confirm resting voltage is at or above 7.0V before clinical use.