Philips Avent SCD923P Replacement Battery 3.7V 2600mAh

Philips Avent SCD923 Series — 3.7V Li-ion Replacement Battery (1S1PBL1865-2.6)

This 3.7V 2600mAh Li-ion battery replaces the OEM cell in the parent unit of the Philips Avent SCD923P, SCD923/26, and SCD923 baby monitor. It restores wireless portability to the parent unit so you can move freely around the home without being tethered to mains power. Voltage and capacity match the original specification exactly.

• SCD923 parent unit compatibility: The SCD923 series parent units share the same 3.7V single-cell architecture and battery bay dimensions — 68.20 × 18.50 × 18.50mm. The BMS on each unit negotiates charge termination at 4.2V, so the cell must match voltage class precisely. This cell does.
• Bench tested on actual hardware: We cycled this cell through the SCD923 parent unit's charge circuit and confirmed the BMS accepted the cell, completed a full charge cycle without fault, and held voltage above the low-battery warning threshold through sustained screen-on operation.
• Re-pair after install: The SCD923 parent unit loses its wireless link to the camera unit when power is fully interrupted. After fitting the new battery, hold the pair button on both units until the camera feed reappears on the parent screen — this is expected behaviour, not a fault with the replacement cell.

Parent unit battery draining overnight on the SCD923

The SCD923 parent unit keeps the screen active during night-time monitoring, which is a sustained current draw that depletes a 2600mAh cell faster than most users expect. The backlit display and continuous radio link to the camera unit both pull current simultaneously. Enabling the screen timeout in the monitor settings cuts display draw significantly without affecting audio monitoring. If the unit is on the bedside table within reach, audio-only mode with the screen off is the most efficient way to run through the night.

Night vision stops working after fitting a new battery

The IR LEDs on the SCD923 camera unit draw from the camera's own power supply, but the parent unit's radio receiver needs stable voltage to process the IR-enhanced feed correctly. If the new battery is at storage charge — typically around 3.6V — the parent unit can struggle to render the night vision image cleanly. Charge the parent unit to full (4.2V cell voltage, indicated by the full battery icon on screen) before testing night vision. If the image is still degraded after a full charge, check that the camera unit itself has power and that the IR mode is not manually disabled in the menu.