GHB ABM800 Baby Monitor Replacement Battery BAT-ABM-A2 3.8V

GHB ABM800 — 3.8V Li-Polymer Replacement Battery (BAT-ABM-A2)

This 3.8V 2000mAh Li-Polymer battery replaces the OEM BAT-ABM-A2 cell in the GHB ABM800 baby monitor parent unit. It restores wireless operation to the parent unit so it can maintain an audio and video link to the baby camera unit. Capacity matches the original at 2000mAh (7.6Wh).

• ABM800 parent unit fit: The ABM800 parent unit uses a 3.8V Li-Polymer cell on a compact 48.50 × 45.00 × 6.00mm footprint. The BAT-ABM-A2 designation ties directly to this housing geometry and the unit's charging circuit voltage rail — other GHB cells at different voltages will not charge correctly here.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the ABM800 parent unit. The BMS accepted the charging handshake without fault flags, held a stable output at 3.8V nominal, and did not trigger the low-voltage cutoff during standard wireless monitoring operation.
• Post-swap re-pair requirement: After fitting this battery in a parent unit that fully lost power, re-pair the parent unit with the camera unit before use. The ABM800 stores its wireless pairing in volatile memory that clears on a hard power loss — the camera unit will show as unlinked until you run the pairing sequence again.

Parent unit battery draining overnight on the ABM800

Night-time monitoring with the ABM800 screen active is a sustained draw on a 2000mAh cell — the display, radio transmitter, and audio circuit all pull current simultaneously. If the parent unit dies before morning, the screen timeout setting is the first thing to check. Enable auto screen-off so the display cuts after a set period while audio monitoring continues. With the screen off, the radio and audio circuits alone draw significantly less current and the cell lasts through a full night.

ABM800 parent unit shows reduced range after battery replacement

The ABM800's wireless radio module is voltage-sensitive — transmission power scales with the supply voltage from the battery. A newly installed cell that hasn't completed its first full charge will deliver voltage below the 3.8V nominal, and the radio runs at reduced output as a result. If range feels shorter than usual after fitting a new battery, charge the parent unit to 100% before testing range again. A full charge brings the cell to its rated voltage ceiling and restores full radio output.