Sagem MONETEL EFT930 Replacement Battery 3.6V 1500mAh

Sagem MONETEL EFT930 Series — 3.6V Ni-MH Replacement Battery (251360788)

This 3.6V, 1500mAh Ni-MH battery replaces the original power cell in the Sagem MONETEL EFT930, EFT930P, EFT930G, and EFT930B portable payment terminals. These are countertop and handheld POS devices used by merchants to process card transactions. The battery maintains terminal operation through the display, printer, and wireless radio during active use.

• EFT930 series compatibility: The EFT930, EFT930P, EFT930G, and EFT930B all share the same battery bay geometry, connector pinout, and 3.6V nominal rail. The BMS handshake is identical across the series, so one cell covers all four variants without modification.
• Bench tested on actual hardware: We cycled this cell through full boot sequences and simulated transaction loads on the EFT930 platform. The BMS accepted the cell on first insertion, completed the PCI boot sequence without dropout, and the charge IC entered top-off mode correctly after a full charge cycle.
• First transaction cycle after installation: After fitting the battery, run at least one complete transaction — receipt print included — before deploying in a live environment. The EFT930 maps battery capacity during normal operation and needs one full power cycle to calibrate the charge indicator accurately.

Terminal not completing PCI boot sequence after battery swap

The EFT930 runs a PCI security boot check at startup that draws a brief current spike as it initialises the secure memory and wireless module together. A new cell that has not yet been accepted by the BMS can cause the terminal to stall or restart at this exact point. This is not a fault with the battery — the BMS needs one complete boot-charge cycle to register the cell. Fit the battery, connect the charger, allow a full charge, then power the terminal on normally.

Terminal will not power on after sitting unused in a drawer

Ni-MH cells self-discharge at roughly 1–2% per day at room temperature. A terminal stored unused for several months can drop the cell below the BMS recovery threshold — typically around 2.8V — at which point the terminal refuses to boot as a protection measure. Connect the terminal to the manufacturer charger and leave it for at least 90 minutes before attempting to power on. If the charge LED does not activate within five minutes of connecting power, the cell has likely dropped below 2.5V and requires a slow-charge recovery cycle via the original dock.