About this replacement
Cardioline ECG ELAN UP-CP-I — 12V Ni-MH Replacement Battery (110763)
This is a 12V 2700mAh Ni-MH replacement battery for the Cardioline ECG ELAN UP-CP-I electrocardiograph. It fits the portable ECG unit used for cardiac monitoring and rhythm diagnostics in clinical environments. Voltage, capacity, and connector match the OEM specification (part no. 110763).
- ECG ELAN UP-CP-I platform fit: The ELAN UP-CP-I runs a 12V rail with a BMS that handshakes on cell chemistry and connector pinout. This replacement matches both, so the device recognises the pack and charges normally through its internal charge IC.
- Bench tested on actual hardware: We ran this pack through the ELAN UP-CP-I charge cycle and confirmed the BMS accepted the cell chemistry, completed charge termination correctly, and passed the device power-on self-test without a fault flag.
- Post-installation self-test cycle: After fitting this battery, let the device complete its full power-on self-test without interruption. The ECG ELAN runs a BMS verification sequence at startup — cutting power during this window stores a false battery fault that will persist until the next clean reboot.
Why the ECG ELAN UP-CP-I reports low battery immediately after a confirmed full charge
The ELAN UP-CP-I BMS compares the new cell's charge curve against a stored OEM reference profile. A fresh Ni-MH cell hasn't yet established the voltage-over-time curve the BMS expects, so the device flags a low-battery condition even when the pack is fully charged. This clears after one complete charge-discharge cycle. Run that cycle before clinical use to let the BMS calibrate its threshold against the actual cell.
Device will not power on after the battery was left in storage
Ni-MH cells self-discharge during storage at roughly 1–2% per day. If the pack drops below the ELAN UP-CP-I's BMS recovery threshold — typically around 9V for a 12V Ni-MH pack — the BMS locks out to prevent cell reversal damage and the device will not power on at all. Connect the charger and leave it for a full uninterrupted charge cycle. If the charge indicator moves within 30 minutes, the BMS has cleared the lockout and the pack is recovering normally.