GE Portascan PA00141 Replacement Battery 12V 3600mAh

GE Portascan Bladder Scanner PA00141 — 12V Ni-MH Replacement Battery (110844)

This is a 12V 3600mAh Ni-MH replacement battery for the GE Portascan Bladder Scanner PA00141. It fits the portable ultrasound unit used in clinical settings to measure bladder volume non-invasively. Cross-references OEM part numbers 110844, CSA19101, and EE090279.

• PA00141 platform fit: The Portascan PA00141 uses a fixed 12V Ni-MH pack with a proprietary connector and BMS handshake. This replacement matches the voltage rail and cell count that the scanner's charge IC expects. Swapping to a different voltage or chemistry will trigger a hardware fault on startup.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a simulated PA00141 load profile. The BMS completed its initialisation sequence without fault codes, and the cell stack held stable voltage through the full discharge curve. One full charge-discharge cycle before clinical deployment is recommended so the BMS can complete its learn routine.
• Startup self-test protocol: After fitting this battery, allow the PA00141 to complete its full power-on self-test without interruption. The scanner's BMS runs a verification check at boot. Cutting power during that sequence registers a battery fault that persists until the next clean reboot — even if the pack is fully charged.

Why the PA00141 alarms low battery immediately after a confirmed full charge

The PA00141's charge management IC stores a capacity baseline from the previous OEM cell. A new replacement pack has not yet completed a full charge-discharge cycle, so the BMS has no learned reference for the new cell's internal resistance profile. Until that reference is established, the scanner applies its conservative OEM threshold and flags the pack as below minimum. Run one complete charge-to-discharge cycle on the bench before putting the unit back into rotation — the alarm clears after the BMS updates its baseline.

Scanner will not power on after the replacement battery sat in storage

Ni-MH cells self-discharge at roughly 1–2% per day unprotected. A pack that has been stored for several weeks can drop below the PA00141's BMS recovery threshold — typically around 10V for a 12V Ni-MH stack — at which point the BMS locks out discharge to prevent cell reversal. Connect the battery to the PA00141 charger for a full uninterrupted charge session before attempting to power on the device. If the charger's indicator does not advance past the first stage, leave it connected for a minimum of 90 minutes to allow the charge IC to trickle the cells back above the recovery floor.