VeriFone VX675 Replacement Battery 3.7V 2600mAh BPK265-001

VeriFone VX675 / VX690 — 3.7V Li-ion Replacement Battery (BPK265-001)

This 3.7V Li-ion cell at 2600mAh (9.62Wh) replaces the OEM battery in the VeriFone VX675, VX690, C680, and C680 3G-BT-WiFi payment terminals. These are portable POS devices used in retail and mobile merchant environments. Voltage and capacity match the original BPK265-001 specification exactly.

• VX675, VX690, and C680 series compatibility: These terminals share the same battery bay dimensions, 3.7V power rail, and BMS handshake protocol. One cell covers the full group because the charge IC and connector pinout are common across this VeriFone portable platform.
• Bench tested on actual hardware: We cycled this cell through full boot sequences and live transaction loads on the VX675. The BMS accepted the handshake on first power-on, held voltage through the combined wireless, display, and printer draw without tripping overcurrent protection.
• First deployment tip: After fitting this battery, run one complete transaction — including receipt print — before deploying the terminal in a live environment. The terminal maps battery capacity during normal operation and needs at least one full power cycle to calibrate the charge indicator correctly.

Receipt printer causing voltage sag on the VX675

The thermal printer in the VX675 draws a short but sharp current spike at the moment it fires — often 600mA or more above the idle draw. On an aged or discharged cell, that spike can drag cell voltage below the BMS low-voltage threshold momentarily. The terminal interprets this as a brownout and either reboots or locks the transaction. A fresh cell at full charge has enough internal headroom to absorb that spike without tripping. If the terminal reboots specifically at the print step, check that the battery is charged above 3.9V before attributing the fault to the terminal itself.

Terminal not completing PCI boot sequence after battery swap

The VX675 runs a security self-check during every boot — part of PCI PTS compliance. If the BMS handshake has not yet been accepted by the charge IC, the terminal can stall partway through that sequence and display a tamper or power fault screen. This is not a defective battery. Connect the terminal to the charging cradle or power adapter, allow a full charge cycle to complete, then reboot. After one complete charge-to-discharge cycle the BMS registers as initialised and the boot sequence completes normally.