Millet door lock can not use ordinary Nanfu batteries. Buy leak-proof batteries so they don't spoil the locks. It is recommended to use the smart door lock special Nanfu i master battery, more safe.
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Xiaomi Mi Home smart door lock is a smart door lock officially released by Xiaomi on December 5, 2018, which supports 6 unlocking methods such as fingerprint password, and adopts C-level smart lock core configuration, which can be linked with Xiaomi smart devices.
That's not what this says either. Millet fingerprint lock to change the battery, generally do not use inferior batteries, the reason is that inferior batteries are easy to leak, resulting in early damage to millet fingerprint lock. However, the quality of the regular Nanfu battery is also acceptable, and it can be used.