About this replacement
Uniden UBW2010C Monitor — 3.7V Li-Polymer Replacement Battery (YK553759)
This 3.7V 1250mAh lithium-polymer battery replaces the original pack in the Uniden UBW2010C parent unit. It fits the handheld monitor only — not the nursery camera unit. Voltage and capacity match the OEM spec exactly.
- UBW2010C parent unit fit: The parent unit runs on a single-cell Li-Polymer pack regulated to 3.7V nominal. This battery uses the same cell format, connector pinout, and BMS handshake as the original — the parent unit charges and reports battery level normally after swap.
- Bench tested on actual hardware: We ran this pack through charge, discharge, and wireless transmission cycles on the UBW2010C parent unit. The BMS held charge termination cleanly and the unit accepted the pack without error flags.
- Re-pair after power loss: Swapping the battery drops power to the parent unit completely. The UBW2010C loses its wireless link to the camera when this happens. After fitting this battery, press and hold the pairing button on both units to re-establish the connection before first use.
Parent unit battery draining overnight on the UBW2010C
Running the UBW2010C parent unit through the night with the screen active is a sustained draw on a 1250mAh cell. The display backlight, RF receiver circuit, and audio output all pull current continuously. A fresh pack will not last indefinitely under this load without the screen timeout enabled. Go to the parent unit display settings and set the screen to auto-off — the audio and alert functions remain active even with the screen off.
Night vision not working after battery replacement
The infrared LEDs in the camera unit draw more current at low light, and the parent unit's RF receiver requires stable voltage to decode that signal cleanly. If the replacement pack is not fully charged before first use, the parent unit voltage sags under combined RF and display load, and night vision footage drops out or freezes. Charge the parent unit to 100% before testing night mode. If the issue persists after a full charge, confirm the camera unit is within 3 metres during initial pairing.