Nobody reviews a smart lock for the 9,999 times it opened correctly — they review the one morning it didn't. Reliability is the entire product, and it comes down to three engineering questions: how the lock is powered, what happens as power fades, and how the mechanism wears.
For a private-label range, these checks should become part of the approved sample and test plan in the WONLY smart lock OEM/ODM programme.
Battery Life: Read the Assumptions
Spec-sheet battery life assumes a set number of unlocks per day at room temperature; heavy-traffic doors, face-recognition wake-ups and cold climates all shorten it. Ask for the assumption behind the number, then expect real life at 60–70% of it. What matters more than the headline months is the warning system: staged low-battery alerts on the lock and in the app, weeks before failure.
The Backup Ladder — Never One Point of Failure
- Low-battery alerts — early, repeated, on-device and in-app
- Emergency external power — a USB contact to wake a dead lock from a power bank
- Mechanical key override — a concealed, high-security keyway as final fallback
- On smart doors: dual power supply — mains operation with an internal backup battery, as on WONLY's X70, so even a blackout doesn't strand the household
Durability Beyond the Battery
Electronics fail at the mechanism's pace. Demand cycle-test evidence — WONLY tests to 200,000+ open/close cycles, roughly 27 years at 20 cycles a day — plus weather sealing for exposed doors, operating-temperature range for your market, and pry/tamper alarms so an attack attempt is an alert, not a surprise.
A Five-Minute Reliability Audit for Buyers
- What is the battery-life assumption, and how am I warned?
- Show me the emergency power route and the mechanical override
- Show me the cycle-test report and the temperature/IP ratings
- What is the warranty on electronics vs mechanism — and the spare-parts commitment?
FAQ
Are mains-powered smart doors more reliable than battery locks? With a proper internal backup — dual power — yes: mains handles daily load and the battery covers outages, which is the architecture WONLY uses on its robotic smart doors.
