Are 10 year battery powered smoke detectors better than hard-wired smoke alarms?

There are advantages to both detectors.

Hard-wired smoke detectors tie into your home’s wiring and require professional installation, but generally do not require battery changes unless they feature a backup battery. Hardwired detector can communicate wirelessly with other compatible alarms to create a fire alarm system (additional alarms sold separately)

When one alarm is triggered, all connected alarms will sound.

Integrated battery backup allows continuous detection during power outages.

10 year battery powered smoke detectors are simple to install, and they work during a power failure. All smoke alarms have a life span of 10 years, sealed or non-sealed, and should be tested on a regular basis. When the battery wears out in a 10 year battery powered smoke detector, the entire unit must be replaced, which helps prevent outdated units from staying in operation.

Are 10 year battery powered smoke detectors better than hard-wired smoke alarms?

so there is no absolute answer to this answer, mainly depending on the place of use. Generally speaking, hard-wired fire detectors are widely used in commercial buildings, office spaces, schools, hospitals, etc. The 10 year battery powered smoke detectors are widely used in personal homes.