Q: What kind of power does a biometric lock take?

A: A biometric lock typically takes either a 9V battery or AA batteries to operate. These will last about a year depending on use. Even if they last longer, you should still change them once a year like you do your smoke detectors. The lock will beep when the battery is getting low letting you know it's time to change them out.

Some biometric safes such as the Vaultek brand use a rechargeable lithium-Ion battery to operate. These will last 4 months on one charge depending on use. They can be recharged using the provided micro-USB charging kit and charge up to full in about 2.5 hours. 3

Liberty biometric safes take a 9V battery but also have an A/C Adapter that can plugin to any standard outlet for power. This way your safe is powered 24/7 and you never have to worry about a battery running low.