Summer Baby Touch 02000 Replacement Battery 3.7V 1100mAh

Summer Baby Touch 02000 Series — 3.7V Li-ion Replacement Battery (02800-02)

This 3.7V, 1100mAh Li-ion battery replaces the original pack in the Summer Baby Touch 02000 parent unit. It also fits the Baby Touch 02004, Slim & Secure 02800, and Slim & Secure 02804, along with seven additional models that share the same OEM part number 02800-02. Dimensions are 55.75 × 40.00 × 5.50mm — measure your original before fitting if you are unsure of your exact model.

• Baby Touch and Slim & Secure parent units: These models share the same 3.7V single-cell architecture, connector pinout, and BMS handshake protocol, which is why one pack covers the full range. Swapping between these models does not require firmware changes or cell re-calibration.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the parent unit, confirming the BMS accepted the pack without a fault code and that the unit held wireless link with the camera station under sustained operation.
• Re-pair the parent unit after fitting: Cutting power completely to the parent unit clears its stored wireless channel. After fitting this battery, hold the pairing button on both the parent unit and camera base until the link indicator confirms connection — skipping this step leaves the screen active but the video feed blank.

Why the Baby Touch 02000 parent unit drops range after a battery swap

The 2.4GHz radio transmitter in the parent unit draws more current than the display or speaker. At low state of charge, cell voltage sags below the radio's operating floor, and the unit steps down transmission power to compensate. This narrows the effective range noticeably — sometimes cutting it by half in a two-storey home. Charge the replacement pack to full before moving the parent unit away from the camera base, and range will return to specification.

IR night vision cuts out on the parent unit screen after battery replacement

The infrared LED array in the camera unit is powered independently, but the parent unit must maintain a stable 3.6V or above to decode and render the IR video stream correctly. A freshly fitted battery that has not been charged often sits at storage voltage — around 3.5V — which is just enough to boot the unit but not enough to sustain the IR decoding circuit under load. The screen goes grey or drops to a static image within seconds of switching to night mode. Charge the parent unit fully before first use after a battery swap; the IR feed will stabilise once cell voltage holds above 3.65V under load.