No. eufy C210 Smart Lock will not lose any of its local access information, such as passcodes and fingerprints, when its batteries are completely depleted as long as you do not reset your C210 Smart Lock.
 

However, it is highly recommended to replace the batteries before they are completely depleted. Please visit <a href="https://support.eufy.com/s/article/How-do-I-know-when-to-change-the-batteries-on-my-eufy-C210-Smart-Lock" style="text-decoration: none;" target="_blank">How do I know when to change the batteries on my eufy C210 Smart Lock?</a> for detailed information on when to replace the batteries on your C210 Smart Lock.
 If you have any further questions regarding eufy C210 Smart Lock, please contact <a href="https://support.eufylife.com/s/contact-us" style="text-decoration: none;" target="_blank">us</a> for assistance.

Will the access information on my eufy C210 Smart Lock be deleted when the batteries are depleted?

Ankersolix US

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