Eufy Smart Lock Battery Flat, Forgot Password or Won't Open?
Battery flat, forgotten password, dead keypad or locked out after too many wrong tries: what to do with your Eufy lock, step by step, and how Uncle Thomas can open it, damage-free wherever possible.
- Since 1998
- 24/7 islandwide
- Damage-free first
The short answer: If a eufy lock dies completely and you have no key, eufy says to connect a power bank to the emergency charging port on the bottom of the lock (Micro USB on older models such as the Smart Lock Touch & Wi-Fi; newer models use USB-C). If that doesn't work, call or WhatsApp 9224 9224, any time.
Eufy smart locks in Singapore
Eufy, from Anker, sells smart locks with fingerprint, keypad and app control, and some models add a built-in video doorbell. Singapore owners often buy them online.
Eufy smart lock battery flat? How to open it from outside
If a eufy lock dies completely and you have no key, eufy says to connect a power bank to the emergency charging port on the bottom of the lock (Micro USB on older models such as the Smart Lock Touch & Wi-Fi; newer models use USB-C).
If your eufy model has a keyway, use the key to lock and unlock when the battery is dead.
Eufy smart lock battery replacement
Depending on the model, eufy locks use AA batteries or a rechargeable battery pack. eufy says its smart locks give low-battery warnings for weeks before they lose power, so act when the warnings start.
How to change the password on a Eufy smart lock
Codes are added and removed in the eufy Security app.
How to reset a Eufy smart lock
A reset removes the lock from your eufy account and deletes its users. Do it from inside, following eufy's steps for your model.
Repeated wrong codes trigger a temporary keypad lockout.
Eufy smart lock not working? Common problems
| Your Eufy lock | Likely cause | What to do |
|---|---|---|
| Keypad completely dark | Batteries flat | From outside, plug a power bank into the charging port on the bottom of the lock. Then replace the batteries from inside. |
| Accepts the code but the latch won't turn | Weak batteries, or a mechanical fault in the lock body | Try emergency power once. Don't force the handle: that's how lock bodies break. |
| Refuses a code you know is right | Privacy mode set from inside, or the wrong-code lockout | Repeated wrong codes trigger a temporary keypad lockout. |
| App shows offline or can't connect | Wi-Fi, hub or Bluetooth | Use the keypad or fingerprint at the door: the Eufy lock works without the app. |
Video models use more power than keypad-only locks, so check the battery level in the app regularly.
A typical Eufy call
This is the kind of Eufy call we often get: A eufy owner ignores the low-battery warnings for a few weeks, then the lock dies while they're out. Their model has no keyway, and the power bank they carry has the wrong cable for the emergency port. We open the door, and they keep the right cable in their bag from then on.
What's different about Eufy locks
Eufy locks are app-first and some include a video doorbell. The emergency port differs between older and newer models, so the right cable matters.
Tips for Eufy owners
- Know whether your model's emergency port is Micro USB or USB-C, and carry that cable.
- Don't ignore the weeks of low-battery warnings.
- Keep any key outside the home.
- Check video settings if the battery drains fast.
Still locked out?
Call or WhatsApp 9224 9224, 24/7. We open Eufy locks damage-free wherever possible, confirm the price first and check ID before opening. A failed Eufy lock can be replaced. Independent, not affiliated with Eufy. See also: digital lock battery dead · forgot your PIN.
Sources: eufy: what happens if the smart lock battery dies. Checked October 2026. Features vary by model: always check your lock's own manual.
Related brands: Tapo · Ezviz · Lockly · Igloohome · Prism+ · all digital and smart lock brands
Eufy Smart Lock FAQs
What happens if my eufy smart lock battery dies?
Use the key if your model has one. If not, connect a power bank to the emergency charging port on the bottom of the lock.
Does eufy warn before the battery dies?
Yes. eufy says its smart locks give low-battery warnings for weeks before they lose power.
How do I change the password on a Eufy smart lock?
Codes are added and removed in the eufy Security app.
How much does it cost to open a Eufy smart lock?
It depends on the model and what's wrong. We confirm the price before we come: WhatsApp a photo of the lock (front and inside if possible) to 9224 9224.
Do you repair Eufy smart locks?
No, we don't do repairs. We open the lock, and if it's faulty we can replace it. For warranty repairs, contact Eufy or your retailer.
Locked Out by Your Eufy Lock?
Call or WhatsApp Uncle Thomas — 24/7, islandwide. We set off as soon as you call.