Wiseasy N6 POS Terminal Replacement Battery 7.4V 2600mAh

Wiseasy N6 / P5 — 7.4V Li-ion Replacement Battery (752886)

This 7.4V 2600mAh Li-ion battery replaces OEM part 752886 in the Wiseasy N6 and P5 portable payment terminals. These terminals run card transactions in retail and mobile service environments where a failing battery causes lost sales and interrupted workflows. Voltage and capacity match the original cell exactly.

• N6 and P5 platform compatibility: Both terminals share the same 7.4V battery rail, connector pinout, and BMS communication protocol — one cell fits both. The BMS on each model reads the same charge-curve signature, so the terminal accepts the replacement without throwing a battery-fault error.
• Bench tested on actual hardware: We ran the cell through a full charge-discharge cycle on the N6 platform. The BMS accepted the handshake on first boot, charge-IC entered CC/CV mode as expected, and top-off completed without a fault flag at either terminal.
• First transaction cycle after installation: Complete one full transaction — including receipt print — before deploying in a live environment. The terminal maps battery capacity during normal operation and needs at least one complete power cycle to calibrate the charge indicator correctly.

Terminal rebooting mid-transaction after battery swap

The receipt printer motor draws a short burst of current every time it fires — on the N6, that spike can hit 1.5A above the steady-state display and wireless draw. If the replacement cell's BMS overcurrent threshold is tripped by this combined load, the terminal cuts power and reboots mid-sale. This does not indicate a faulty battery. Run three to five complete transaction cycles including printed receipts — the BMS recalibrates its load profile after repeated full cycles and the reboot behaviour stops.

Terminal not powering on after sitting unused in a drawer

Li-ion cells self-discharge at roughly 2–3% per month in storage. A terminal left unused for several months can arrive with a cell voltage below the BMS recovery threshold — typically under 2.5V per cell — and the terminal will show no signs of life. Connect the terminal to its OEM charger and leave it for 20–30 minutes before attempting to power on. The charger applies a low-current trickle that pulls the cell above the recovery threshold, after which normal charging resumes. If the terminal still does not respond, check for 5V DC output at the charging port.