Luvion Grand Elite Baby Monitor Replacement Battery 3.7V 1000mAh

Luvion Grand Elite — 3.7V Li-Polymer Replacement Battery (PL503450)

This 3.7V, 1000mAh Li-Polymer battery replaces the original cell in the Luvion Grand Elite baby monitor parent unit. It restores portable operation when the factory battery can no longer hold a charge. Voltage and chemistry match the Grand Elite's power circuit exactly.

• Grand Elite parent unit fit: The Grand Elite parent unit runs a single-cell 3.7V Li-Polymer architecture. The PL503450 cell dimensions — 52.00 × 34.10 × 5.40mm — match the internal bay, and the BMS accepts this cell's charge profile without fault flags.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on the Grand Elite parent unit. The BMS initialised cleanly on first connect, accepted full charge without thermal event, and held voltage within spec across the full discharge curve.
• Wireless re-pair after swap: The Grand Elite parent unit loses its wireless link to the camera unit when power is fully interrupted. After fitting this battery, hold the pairing button on both units until the link indicator confirms re-connection — do not skip this step.

Parent unit battery draining overnight on the Grand Elite

Running the Grand Elite parent unit with the screen active all night is a sustained draw that a 1000mAh cell handles, but screen-on with VOX disabled accelerates drain noticeably. The Grand Elite's display backlight draws continuous current — the same circuit that powers wireless reception. Enable the screen timeout function in the parent unit menu so the display cuts after a set period. The radio link stays active; only the backlight drops out, reducing overnight current draw significantly.

Reduced wireless range after fitting a new battery

The Grand Elite's radio transmitter output is voltage-sensitive — at low state of charge, the parent unit scales back transmission power to protect the cell. If range drops immediately after a battery swap, the cell likely shipped at storage voltage, not full charge. Connect the parent unit to mains and charge completely before testing range. At full charge, the radio circuit runs at rated voltage and range returns to normal.