Babysense V43 Replacement Battery 3.7V 1800mAh HQ804050

Babysense V43 Video Baby Monitor — 3.7V Li-Polymer Replacement Battery (HQ804050)

This 3.7V, 1800mAh Li-Polymer battery replaces the original HQ804050 cell in the Babysense V43 Video Baby Monitor parent unit. It restores power to the handheld receiver that displays video and audio from the camera unit. Dimensions are 51.50 x 39.50 x 8.00mm — confirm these against your existing cell before installing.

• V43 parent unit fit: The V43 parent unit runs a single Li-Polymer cell at 3.7V nominal. The HQ804050 part number matches the cell's footprint and connector orientation. No modification needed to fit the battery tray.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The protection circuit triggered correctly at low-voltage cutoff and resumed charge acceptance normally after a full recovery charge.
• Re-pair after power loss: After replacing the battery, re-pair the parent unit with the camera unit. The V43 loses its wireless link when the parent unit drops to zero volts — the pairing data does not survive a full power interruption.

Parent unit not connecting to camera after battery swap

When the parent unit's battery fully depletes or is physically removed, the V43 loses its stored pairing with the camera unit. Fitting a new battery alone does not restore the wireless link — the units need to re-establish communication. Hold the pair button on the camera unit, then initiate scan or pair mode on the parent unit. Once the video feed appears, the link is restored and will persist through normal sleep and wake cycles.

Night vision not showing on parent unit screen after replacement

The V43 camera's IR LEDs draw more current than the camera's standard daytime mode. If the parent unit battery is below roughly 3.5V when you first power on after a swap, the system may display a blank or unstable night-vision feed. This is not a fault with the camera — it reflects the radio and display pulling available voltage before the battery reaches stable operating charge. Charge the parent unit to full before testing night vision in a dark room.