About this replacement
Criticon Dinamap Pro 1000 — 12V Ni-MH Replacement Battery (120239)
This 12V 7200mAh Ni-MH battery is a direct replacement for the Criticon Dinamap Pro 1000 non-invasive blood pressure monitor, type MS633177K. It replaces OEM part numbers 120239 and 125-00-455100019. Capacity and voltage match the original specification exactly — taken from the product data, not estimated.
- Dinamap Pro 1000 compatibility: The Pro 1000 platform uses a 12V Ni-MH pack with a specific connector and BMS handshake tied to the MS633177K cell configuration. Both OEM part numbers reference the same pack format — the BMS verifies cell count and voltage signature at power-on, so the chemistry and voltage rail must match exactly.
- Bench tested on actual hardware: We ran this pack through the Dinamap Pro 1000 power-on sequence and confirmed the BMS accepted the cell handshake without fault codes. The charge IC reached full capacity after one complete charge cycle, and the low-battery threshold triggered at the correct voltage during discharge.
- Post-installation self-test protocol: After fitting this battery, allow the Dinamap Pro 1000 to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup — cutting power during this step registers a false battery fault that persists until the next clean reboot.
Why the Dinamap Pro 1000 flags a battery fault after a confirmed full charge
The Pro 1000's BMS stores an OEM cell profile and compares incoming charge data against that baseline during the first few cycles. A new Ni-MH pack doesn't match that learned profile until it has completed one full charge-discharge cycle. Until then, the monitor may display a low-battery or fault indicator even when the pack is fully charged. Run one complete cycle — charge to 100%, allow normal discharge in use, then recharge — before relying on the battery indicator for clinical decisions.
Dinamap Pro 1000 not powering on after the battery sat in storage
Ni-MH cells self-discharge during storage, and the Pro 1000's BMS has a minimum recovery threshold — typically around 10V for a 12V pack. If the cell voltage has dropped below that threshold, the device will not power on and shows no response. Connect the monitor to mains power first and leave it on charge for at least two hours before attempting to power on independently. This allows the charge IC to bring the cell voltage above the BMS recovery floor before it attempts a startup handshake.