9v power bank

i wanted a power bank which could supply 9v to my dso138 and component tester ..

so i coupled a tp4056 charger board and m140 step up board ..

Remixed from http://www.thingiverse.com/thing:1684850

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/b2wxAGBoVvL