General Home Maintenance · Safety
Replace a Wireless Doorbell Battery
Repair summary
Twist or unscrew the bell unit off its mount, swap the battery (usually an A23 12V or CR2032), and re-pair if the chime asks for it. Wired bell transformers must be serviced by a licensed electrician.
Likely issue
Flat doorbell button battery
DIY difficulty
1/5
Estimated DIY cost
$5–$10
Estimated tradie cost
$120 (callout)
Tools required
- Small Phillips screwdriver
Materials required
Step-by-step instructions
- Open the bell unit and check what battery type it takes.
- Twist or unscrew the bell unit off its mount, swap the battery (usually an A23 12V or CR2032), and re-pair if the chime asks for it. Wired bell transformers must be serviced by a licensed electrician.
Safety warnings
If the doorbell is hard-wired (no battery in the button), the chime transformer is a licensed electrician's job.
When to call a tradie
Call a licensed tradie if the work is outside the scope of this guide, involves regulated trades (electrical, gas, structural, waterproofing), or if you discover hidden damage. A professional will typically charge $120 (callout).
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