About this replacement
Celltreat Pipet Controller — 3.7V Li-Polymer Replacement Battery (230204)
This is a 3.7V 750mAh Li-Polymer cell for the Celltreat Pipet Controller, OEM part number 230204. It fits electronic pipetting devices used in laboratory and clinical liquid-handling workflows. Voltage and capacity match the original specification exactly.
- Pipet Controller platform fit: The Celltreat 230204 platform uses a 3.7V single-cell Li-Polymer configuration with a fixed BMS handshake tied to that chemistry. Swapping to a different chemistry or voltage trips a permanent fault state on the charge IC, so cell chemistry must match exactly.
- Bench tested on actual hardware: We cycled this cell through a full charge-discharge sequence and confirmed BMS handshake completion, stable cutoff voltage at the low-end threshold, and clean charge-IC communication with no fault flags raised.
- Power-on self-test after installation: After fitting this cell, allow the Pipet Controller to complete its full startup self-test without interruption. The device runs a BMS verification sequence at power-on — cutting power during that window forces a false battery fault that persists until the next clean reboot cycle.
Why the Pipet Controller alarms low battery with a freshly charged replacement
The charge IC on the 230204 platform applies a conservative current limit on an unrecognised cell and may not reach the full 4.2V terminal voltage on the first charge attempt. The BMS interprets anything below its learned threshold as a degraded or low cell, so it flags a low-battery alarm even when the cell is physically charged. One complete charge-discharge cycle trains the BMS to the new cell's actual capacity curve. After that cycle, the alarm clears and the indicator reports accurately.
Pipet Controller not powering on after the replacement cell sat in storage
Li-Polymer cells self-discharge during storage. If the cell voltage drops below approximately 2.5V, the Pipet Controller's BMS enters deep-discharge lockout and refuses to boot — the device shows no response at the power button. Connect the unit to its charger and leave it for at least 30 minutes before attempting to power on. Most BMS recovery circuits require a sustained low-current trickle to bring the cell back above the 3.0V re-initialisation threshold before normal charge resumes.