Dead batteries are the most common after-sales question for smart locks. Explaining power options clearly at the point of sale prevents most of them.
Two power approaches
AA batteries
The B6, B36, B7 and T6S handle locks use four AA batteries. The product pages state about one year of use under normal use. Replacement is easy and AA cells are sold everywhere.
Rechargeable battery
Dual-screen models use a 4200 mAh rechargeable battery. The HP-01 page quotes 3-8 months of use or one year on standby, with a low-battery reminder. Video and screens use more power than simple handle locks, so charge habits matter.
Low-battery warnings
Locks give a voice or light warning, and Wi-Fi models can push an alert to the app. Dual-screen models list a low-battery reminder in their specifications. Encourage customers to react to the first warning.
Emergency access
- Mechanical key: every model keeps a key backup.
- USB emergency power on the outside panel of handle locks: connect a power bank and unlock with a code or fingerprint.
- Type-C emergency power on the dual-screen series.
Tips for distributors
- Sell spare AA batteries with handle locks.
- Keep the mechanical keys with the owner, not inside the home.
- Teach customers to test the USB or Type-C emergency route once.
- For rentals, add battery checks to the turnover checklist.
Temperature
The A60S and A20S specification pages list a fingerprint operating temperature of -20 to 55 °C. The B65S lists -25 to 50 °C. Check the range against your climate.
See models in our product catalog or ask us for the battery details of a specific model.
Frequently asked questions
How long do the AA batteries in the B6 last?
The product page states about one year of use with four AA batteries under normal use.
What do I do if the battery is dead?
Use the mechanical key, or connect a power bank to the USB (handle locks) or Type-C (dual-screen locks) emergency port.
Do dual-screen locks need frequent charging?
Charging frequency depends on usage; the HP-01 page quotes 3-8 months of use or one year on standby.
