Mi Thermometer LiPo battery box for Bambu AMS

I found that the CR2032 battery that comes with the Mi Thermometer doesn’t last very long, and coin cell batteries are very expensive. So, I designed this box to accommodate a LiPo battery, a USB-C charger, and a regulator.

This box is still a prototype, so you might need to tweak it a little bit yourself.

To finish the project you need:

1. A Mi Thermometer (43x43 mm or variants with the same dimensions)
2. A 4056H USB-C charger
3. An LDO (low dropout voltage regulator)
4. A LiPo battery that fits into the box

Four M3×6 mm countersunk screws

The interior has plenty of space, so you could probably fit components from other projects.

This box is designed to work together with a dry box like this:
https://makerworld.com/en/models/563166-ams-desiccant-box-no-spool-removal-required?from=search#profileId-482649

You can print the smaller box and place it behind the thermometer.

If you prefer make world. You can find it here: https://makerworld.com/en/models/1300046-mi-thermometer-lipo-battery-box-for-bambu-ams#profileId-1332202