This small power bank can store 3.7V 2000mAh (jnx103450) and offer a micro usb input circuit to charge the battery and an usb output to any circuit or device using 5V power (134n3p).
This power bank could be used with small solar panels with an output voltage regulator as aj27tie.
USB output could be used to charge any usb device or power any of your favorite 5V electronic project.
3D Honeycomb choose as infill pattern as we expect this structure to endorse energy dispersion in case of shock. We'd like the honeycomb to be broken instead of our electronic materials.
The author marked this model as their own original creation.