The Baby FM thermometer uses a 1 x CR2032 lithium coin cell battery (3V).

When to Replace

• The app displays a low battery warning in Settings > Device.
• The thermometer LED indicates low battery.
• The device fails to power on or maintain a Bluetooth connection.

How to Replace

1. Remove the thermometer from the elastic strap (if attached).
2. Open the battery compartment on the back of the device.
3. Carefully remove the old battery.
4. Insert a new CR2032 battery, observing correct polarity (+ side up, as marked).
5. Close the battery compartment securely.
6. The device will activate automatically. The LED will flash to confirm.

Battery Safety: WARNING – KEEP BATTERIES OUT OF REACH OF CHILDREN.

• Swallowing a CR2032 battery can cause severe internal burns and death within 2 hours.
• If you suspect battery ingestion, seek emergency medical attention immediately.
• Do not use a damaged, deformed, or leaking battery.
• Do not attempt to recharge, short-circuit, or dispose of batteries in fire.
• Dispose of used batteries in accordance with local environmental regulations.