Please replace with new batteries or charge the scale.
For battery model:
1. Please ensure the positioning of the batteries is correct.
2. If there is any rust on the surface of the battery compartment, please clean it.
3. Please make sure all points of contact are tight.
For rechargeable model:
Try resetting by pressing the reset button for 5 seconds after a night of charging.
Tips for extending service life:
1. When not in use for a long period of time, please remove the batteries and place the device in a dry room and protect it against extreme moisture, heat, lint, dust, and direct sunlight. Never place any heavy objects on the device.
2. Replace the battery within 3 days when the scale displays "Lo".
3. Excessive heat may damage the battery. Avoid using and storing the scale in high-temperature places.
4. Do not use the scale in a humid environment.
5. Do not mix old and new batteries.
For rechargeable model:
1. Do not use while charging.
2. Do not try to keep charging it after it is fully charged.