Datascope Accutorr Plus 12V Replacement Battery 2300mAh SLA

Datascope Accutorr Plus / Passport Series — 12V Sealed Lead Acid Replacement Battery

This 12V 2300mAh (27.6Wh) sealed lead-acid battery fits the Datascope Accutorr Plus patient monitor, Passport 2, Passport EL, and Passport Monitor (note: Passport Monitor requires two units). It powers the device during patient transport and any period without mains supply. Voltage and capacity match the original cell specification.

• Accutorr Plus and Passport platform compatibility: These monitors share a common 12V SLA bay and BMS handshake across the line. The same cell voltage rail and physical footprint (182.21 × 60.74 × 23.58mm) covers all listed models without modification.
• Bench tested on actual hardware: We cycled this cell under a simulated monitor load profile and confirmed the BMS accepted the new cell, completed charge termination correctly, and held voltage within the device's operating window across multiple discharge cycles.
• Post-swap self-test protocol: After installing this battery, allow the Accutorr Plus or Passport unit to complete its full power-on self-test without interruption. Cutting power during the BMS verification sequence at startup triggers a false battery fault that will persist until the next clean, uninterrupted reboot.

Medical device alarming low battery with a freshly charged replacement installed

The Accutorr Plus BMS uses internal thresholds calibrated to an OEM cell's charge profile. A new SLA cell that has not yet completed a full charge-discharge cycle may not satisfy that threshold, even at full charge. The monitor reads state-of-charge from voltage curves, and a fresh cell's resting voltage can sit just below the threshold the BMS expects for a "healthy" reading. Run one full charge and one full discharge before trusting the battery indicator for clinical use.

Device will not power on after the replacement cell sat in storage

Sealed lead-acid cells self-discharge at roughly 3–5% per month. A cell stored for several months can drop below the BMS recovery threshold — typically around 10.5V for a 12V SLA — at which point the device will not boot at all. Connect the battery to a compatible SLA charger externally for at least 8 hours before reinstalling. Once resting voltage returns above 11V, the monitor's BMS will accept the cell and allow normal startup.