Codan Argus 606 S Compatible Battery 12V 2000mAh Ni-MH

Codan Argus 606 S Syringe Pump — 12V Ni-MH Replacement Battery (110840-O)

This is a 12V 2000mAh Ni-MH replacement battery for the Codan Argus 606 S Syringe Pump and Argus infusion pump 606. It replaces OEM part numbers 110840-O and 601260. The battery fits directly into the pump's battery bay at the same voltage and capacity as the original cell pack.

• Argus 606 S and 606 platform compatibility: Both Argus 606 variants share the same 12V battery rail, connector pinout, and BMS handshake protocol. A single cell pack covers both designations without modification.
• Bench tested on actual hardware: We cycled this battery through the Argus 606 S charge and discharge sequence. The BMS accepted the cell, completed the charge cycle without flagging a chemistry mismatch, and held voltage within the expected window across multiple discharge runs.
• Post-installation self-test protocol: After fitting this battery, let the pump complete its full power-on self-test without interruption. The Argus 606 S runs a BMS verification sequence at startup — cutting power during this window stores a false battery fault that persists until the next full reboot.

Why the Argus 606 S self-test fails after a battery swap

The Argus 606 S BMS runs a learn cycle when it first encounters a new cell. On the initial charge, the charge IC applies a conservative current limit while it profiles the new Ni-MH pack. If the pump is powered down mid-cycle or the self-test is interrupted, the BMS logs an incomplete verification and will continue to flag battery faults on subsequent boots. Run one complete charge-discharge cycle before placing the pump in clinical use — this lets the BMS complete its calibration pass and clear any pending fault flags.

Charge indicator not reaching 100% on first charge

On a fresh Ni-MH cell, the Argus 606 S charge controller holds back the final charge increment until it confirms the pack's temperature and delta-V signature match expected values. A new cell's internal resistance reads slightly higher than a conditioned pack, which causes the controller to interpret full charge as not yet reached. This is not a fault — it resolves after the first complete charge cycle once the BMS has mapped the cell's actual response curve. After that first cycle, the indicator will reach 100% and hold normally.