About this replacement
Arcomed AG SP6000 Syringe & Volumed VP7000 Series — 9.6V Ni-MH Replacement Battery (HHR200A9)
This 9.6V, 2000mAh Ni-MH battery replaces the original power cell in the Arcomed AG SP6000 syringe infusion pump and the Volumed VP7000 and μVP7000 Chroma volumetric pump series. It matches the OEM voltage rail, connector footprint, and BMS communication profile required by these clinical infusion devices. Capacity is 2000mAh (19.2Wh), sourced to the HHR200A9 and MGH00116 part numbers.
- SP6000 and Volumed VP7000 platform fit: These infusion devices share the same 9.6V Ni-MH cell format, connector pinout, and BMS handshake protocol — which is why one battery covers both the syringe and volumetric pump lines. The BMS on each device reads cell voltage and temperature data from the same register set, so the replacement communicates cleanly without triggering a chemistry mismatch fault.
- Bench tested on actual hardware: We cycled this battery under a simulated infusion pump load profile. The BMS completed its self-test verification, accepted the charge cycle, and did not flag a low-cell or chemistry-error fault across repeated charge and discharge passes.
- Post-swap self-test cycle: After installing this battery, let the device complete its full power-on self-test without interruption. The SP6000 and Volumed units run a BMS verification sequence at startup — cutting power during this sequence locks in a false battery fault that persists until the next clean reboot from a full charge state.
Why infusion pump BMS thresholds cause false faults on new Ni-MH cells
Medical infusion pumps apply tighter voltage and temperature acceptance windows than consumer devices — the BMS is calibrated against a conditioned OEM cell that has already completed several charge cycles. A brand-new Ni-MH cell starts with slightly suppressed resting voltage and higher internal resistance, which can push it outside the device's acceptance band on the first check. One full charge-discharge cycle normalises the cell's electrochemical profile. After that cycle, the BMS reads the cell as within spec and clears any residual fault flags.
Charge indicator stalling below 100% on first charge after installation
On first charge, the SP6000 and Volumed pump charge ICs apply a conservative current limit when the incoming cell voltage sits outside the expected mid-cycle window. This causes the charge indicator to stall — often between 80% and 95% — before the IC steps up to the final top-off phase. This is not a faulty battery or a faulty charger. Allow the charge cycle to run to completion without removing the battery; the IC will step through its stages and reach full charge. If the indicator still stalls after a second full cycle, verify the dock contact pins are clean and the resting cell voltage reads at least 9.0V before insertion.