The answer to 'why is my smoke detector power surge' is that a power surge can cause damage to the electrical components in a smoke detector, leading to malfunctioning or failure. Power surges can be caused by lightning strikes, faulty wiring, or issues with the electrical grid in your area.
Symptoms of a smoke detector power surge may include the detector chirping, beeping, or flashing erratically, or the detector failing to respond when tested. In some cases, the smoke detector may completely stop working. If you notice any of these issues, it's important to address them promptly to ensure your home's safety.