Can the rechargeable backup battery be replaced? October 07, 2021 22:33 Updated Follow The rechargeable backup battery in the Decora Digital Bluetooth products is not a user serviceable part. Related articles When should I replace a switch? How do I identify my device's model number? DDE06-BLZ: Decora Digital Electronic Low Voltage Dimmer and 24-hour Timer How do I reset a Decora Digital device to its original factory settings? Can I install a Decora Smart Bluetooth Device Outside, in an Attic or an Unheated Garage?