If you have replaced the Smart Smoke Detector battery and still get a low battery message, there are several possible causes:
The new battery is not inserted correctly: Make sure the new battery is inserted correctly. If the polarity is incorrect, the device cannot use the battery and continues to indicate that the battery is dead.
The new battery is type AA 1.5Volt. This battery is not suitable, the correct battery is type CR14505 3Volt.
The device has a problem: If none of the above solutions works, there may be a problem with the device itself. In this case, contact the store where you purchased the product.