BT BM1000 Video Baby Monitor Replacement Battery 3.7V 1000mAh

BT BM1000 / Video Baby Monitor 1000 — 3.7V Li-ion Replacement Battery (BYD006649)

This is a 3.7V, 1000mAh Li-ion replacement battery for the BT BM1000 and Video Baby Monitor 1000 parent unit. Part number BYD006649. It fits the parent handset that receives audio and video from the camera unit during monitoring.

• BM1000 and Video Baby Monitor 1000 parent unit: Both models share the same parent handset platform — same voltage rail, same physical cell dimensions (56.00 × 34.50 × 5.00mm), and the same BYD006649 battery slot. One replacement covers both.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the BM1000 parent unit. The onboard BMS accepted the cell without error, regulated charge termination correctly, and held voltage within the expected operating band across audio and screen-on states.
• Wireless re-pair after power loss: Baby monitor parent units drop their wireless link to the camera unit when the battery is fully removed. After fitting this replacement, power on the parent unit and run the pairing sequence from the BM1000 menu — the connection will not restore on its own.

Parent unit battery draining overnight with screen active

The BM1000 parent unit draws continuously when the screen stays on through the night — backlight, radio receiver, and speaker circuits all pull current simultaneously. A 1000mAh cell at 3.7V gives 3.7Wh total. With screen-on active all night, that budget runs down faster than most users expect. Enable the screen timeout in the display settings so the LCD shuts off between alerts while the audio circuit stays live.

Night vision not working after fitting a replacement battery

This symptom typically appears when the replacement cell is installed at a low state of charge. The IR LEDs on the camera unit require the parent unit to maintain a stable radio link, and a low battery causes voltage sag that can interrupt the handshake. The night vision image drops out or appears on the parent screen as a black feed. Charge the parent unit fully to 4.2V before testing night vision — the IR feed should restore once the cell is at capacity.