V Tech FT605075P WiFi Baby Monitor Replacement Battery 3.7V 2500mAh

V Tech RM7764HD / RM7764-2HD — 3.7V Li-Polymer Replacement Battery (FT605075P)

This is a 3.7V, 2500mAh Li-Polymer battery for the parent unit of the V Tech Wifi Remote Access 2 Camera Baby Monitor. It fits the RM7764HD and RM7764-2HD models and replaces OEM part FT605075P. If the parent unit no longer holds a charge through a monitoring session, this battery restores capacity to original spec.

• RM7764HD and RM7764-2HD parent unit fit: Both models run the same parent unit hardware with a shared 3.7V battery rail and identical connector pinout. The BMS on the parent unit accepts this cell without handshake issues — no firmware mismatch between single and dual-camera variants.
• Bench tested on actual hardware: We ran the FT605075P replacement through charge cycles on the parent unit. The BMS accepted the cell without error, balanced to full charge correctly, and the protection circuit tripped at the expected low-voltage threshold.
• Re-pairing after battery replacement: Cutting power to the parent unit completely — which battery replacement always does — clears the active wireless link to the camera units. After fitting this battery, power on the parent unit and follow the channel scan or sync procedure in your RM7764HD manual before the cameras will appear on screen.

Parent unit battery draining overnight with cameras active

Running the RM7764HD parent unit through the night with the screen on and two cameras streaming is a sustained high-draw load. The LCD backlight, WiFi radio, and audio circuit all pull current simultaneously. A degraded original battery often can't sustain this load past 3–4 hours. Enabling the screen timeout in the parent unit settings cuts backlight draw significantly and is the single most effective way to extend charge between sessions.

Night vision on camera unit appears dark or patchy after parent unit battery swap

Night vision failure after a battery replacement usually points to the parent unit not having fully charged before use. The IR LED array on the camera unit is controlled via the WiFi link — if the parent unit radio is operating at reduced voltage during a low charge state, signal quality drops and the IR command can misfire or cut out. Charge the parent unit to 100% before first use. If the image is still patchy, power-cycle the camera unit at the wall and re-initiate the IR mode from the parent unit menu.