Esaote ECG Personal 120 Replacement Battery 12V 2000mAh

Esaote ECG Personal 120 — 12V Ni-MH Replacement Battery (110788)

This is a 12V, 2000mAh Ni-MH replacement battery for the Esaote ECG Personal 120 portable electrocardiograph. It fits the handheld unit used for cardiac monitoring in clinical and mobile settings. OEM part number 110788.

• ECG Personal 120 fitment: The ECG Personal 120 runs a 12V power rail with a BMS that validates cell chemistry and pack voltage at startup. This cell matches that voltage requirement and connector layout so the device completes its handshake without triggering a battery fault code.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the ECG Personal 120 platform. The BMS accepted the cell on first insertion, completed its self-test sequence, and held voltage within the device's acceptable operating window across the test load.
• First-cycle self-test protocol: After installation, let the device complete its full power-on self-test without interrupting the sequence. The ECG Personal 120 runs a BMS verification check at every boot — cutting power mid-sequence registers a false battery fault that persists until the next clean reboot from a fully charged state.

Why the ECG Personal 120 reports a battery fault on a new cell

The ECG Personal 120 BMS stores a charge history profile and compares new pack behaviour against it at startup. A fresh Ni-MH cell presents a slightly different internal resistance signature than a conditioned one, which can trip the fault threshold on the first one or two boot cycles. This is not a defective cell — it is the BMS applying its validation check against a cell that has not yet completed a full charge-discharge conditioning cycle. Run one complete charge to full, discharge through normal device use, then recharge before drawing any clinical conclusions about battery health.

Charge indicator not reaching 100% on the first charge after swap

The ECG Personal 120 charge IC applies a conservative current ceiling on cells it has not yet characterised, which means the first charge often terminates early at 85–90% rather than 100%. This is the charge controller being cautious, not a capacity problem with the cell. The indicator typically reaches full on the second charge once the IC has logged the cell's acceptance curve. Complete a second full charge cycle before using the device in a patient examination setting.