USB Solar Battery Pack

thingiverse

Here we have a portable Solar Battery Charger designed specifically for all your gadgets. The charger comes equipped with a 2W 6V solar panel, a USB 5V step up converter, one 2000 mAh 3.7v 18650 Lithium battery and a TP4056 charge controller. I created this to charge in just one day of full sun, you can certainly add more batteries for your project if you'd like. This charger can also be charged via the micro USB port. The parts snap together seamlessly, though I glued mine as I don't plan on opening it up again. However, my first prototype was not glued and is still holding up incredibly well, even printed in PLA. I printed the final version's parts in ABS at 50% infill, without using any supports, although this may vary depending on your printer model. The small LED cover should be printed in clear/translucent filament and glued from the inside using a tiny drop of superglue. Electronics are held firmly in place with a little bit of glue gun adhesive. If you have any questions, please don't hesitate to ask. Solar Panel: https://www.amazon.com/gp/product/B01FK907UI/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 Battery Holder (using metal battery connectors only): https://www.amazon.com/gp/product/B013DUOJV4/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1 USB Step Up: https://www.amazon.com/gp/product/B00C93Z8JY/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 Charge Controller: https://www.amazon.com/gp/product/B01DRT4PWY/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 Blocking diode installed on Solar Panel (blocks power back flow when panel is not charging): 1N4001 On-Off 2 Position Switch: 19mm x 5mm x 10mm This was a proof of concept project for myself, and I take no responsibility for any issues you may encounter if you decide to replicate this project. STL files are included for reference purposes only.