About this replacement
Worldline Yoximo — 7.4V Li-ion Replacement Battery (3034110103)
This 7.4V 1100mAh Li-ion battery replaces the original 3034110103 cell in the Worldline Yoximo portable payment terminal. It fits the Yoximo's battery bay and connects to the same BMS circuit as the factory unit. Capacity is 1100mAh (8.14Wh), matching the original specification.
- Yoximo platform fit: The Yoximo uses a compact 7.4V two-cell Li-ion pack with a proprietary connector and an onboard BMS that monitors cell voltage, temperature, and state-of-charge. This replacement matches that voltage rail and connector pinout so the terminal's charge IC recognises the pack correctly.
- Bench tested on actual hardware: We cycled this battery through charge and discharge on a Yoximo unit. The BMS accepted the pack without fault flags, and the charge IC moved through CC/CV phases normally before dropping to top-off mode at full capacity.
- First deployment step for the Yoximo: After installation, complete one full transaction cycle — including a receipt print — before putting the terminal into live service. The Yoximo maps battery capacity during normal operation and needs at least one complete power cycle to display the charge indicator accurately.
Payment terminal rebooting mid-transaction after battery swap
The Yoximo's receipt printer draws a short high-current pulse when it fires — this can trip the BMS overcurrent protection on a new cell that has not yet completed a full charge cycle. A freshly installed battery may sit at a partial state-of-charge, which lowers the cell's ability to deliver that burst without the BMS cutting output. The fix is to charge the terminal fully before first use and complete at least one full transaction with a receipt print while on charge. After one full cycle, the BMS recalibrates its overcurrent threshold against the actual cell characteristics and the reboots stop.
Terminal will not power on after sitting unused in a drawer
Li-ion cells self-discharge slowly over weeks. If the Yoximo has been stored without charging, the cell voltage may have dropped below the BMS recovery threshold — typically around 2.5V per cell, or 5.0V across the pack. At that point the BMS enters deep-discharge lockout and will not pass current to the terminal even when a charger is connected. Connect the terminal to its original charger and leave it for 20–30 minutes without pressing the power button — the charge IC will attempt a trickle pre-charge to bring the cell back above the recovery voltage. If the charge LED does not respond after 30 minutes, the cell has gone below the point of recovery and the battery needs replacement.