About this replacement
Ingenico EFT930 Series — 3.7V Li-ion Replacement Battery (F26401652)
This 3.7V 1800mAh Li-ion battery replaces the original cell in the Ingenico EFT930 series portable payment terminal. It fits the EFT930, EFT930-B, EFT930-P, and EFT930-W variants. Swap it when the original no longer holds enough charge to complete a normal shift on the floor.
- EFT930 series compatibility: All four EFT930 variants share the same 3.7V cell format, connector pinout, and BMS handshake protocol. One battery covers the full range without modification.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the EFT930 platform. The BMS accepted the handshake on first boot, the charge IC reached full voltage without flagging errors, and the terminal reported battery status correctly throughout.
- First deployment tip: After fitting this battery, complete one full transaction cycle — including a receipt print — before taking the terminal live. The EFT930 maps battery capacity during normal operation, not during idle charging, so it needs at least one active power cycle to calibrate the charge indicator correctly.
Terminal rebooting mid-transaction after a battery swap
The EFT930's receipt printer draws a sharp current spike when it fires — this is the single biggest cause of mid-sale reboots after a battery replacement. If the replacement cell's BMS is not yet fully initialised, it can interpret that spike as an overcurrent event and trip the protection circuit, cutting power instantly. The terminal then restarts, which looks like a random crash to the operator. Run two or three complete transaction cycles, including printed receipts, immediately after installation to let the BMS settle its overcurrent threshold.
Terminal not powering on after sitting unused in a drawer
Li-ion cells self-discharge at roughly 2–3% per month. An EFT930 left unused for several months can arrive with a cell voltage below 2.5V — the point where most BMS circuits lock out to prevent damage. The terminal will show no response at all when the power button is pressed. Connect the terminal to its original charger and leave it untouched for at least 30 minutes before attempting to power it on — most charge ICs include a trickle-charge recovery mode that will bring the cell back above the 2.8V BMS re-enable threshold.