This project makes use of a 12V battery, like you would use for a vehicle, for charging USB devices in case of a power outage or camping trip. It’s as simple as affixing a USB car charger to the battery. After Hurricane Sandy, I was without power and used an inverter/battery setup at home, but it was huge and heavy. This project revisits the concept with a smaller battery (meant for motorcycles/ATVs) and DC-only charging.
I’ve also created an optional 3D printed battery topper to cover the battery contacts and hold the USB ports. The design is available on Tinkercad so that you may modify it to fit your specific battery and USB charger.
The compact design makes it easier to transport and store. There are many situations where this device could be useful:
- power outage
- off-grid living
- 12V vehicle battery (I used one intended for a motorcycle/ATV) such as this one
- USB car charger with on/off switch
- 3D printer (I have a Creality CR-10s Pro)
- 3D filament
- Ruler and/or Calipers
- Battery charger to fill up between uses
Find the full tutorial on Instructables