smart door locks 18650 battery-5V UPS

thingiverse

If you are tired of changing dry batteries, then I am happy to share my experience with you. You just need to buy a “USB-C female panel mount connector”Of course, for safety reasons you can use the second solution---5V phone chargerWarning: Before replacing, be sure to confirm that your door lock supports this voltage, otherwise there is a risk of damage. . ps: Although 90% of these motherboards support DC power supplies below 3v-12vYou can also add“ AMS1117/ MP1584EN（+-v） ”to reduce the voltage, but this power consumption will increase.PS：No supportv4-Added damping buckle.