5v USB to 9v battery case by AeonicEntity

Last crawled date: 3 years ago

Revision: Made changes to the lid to make it easier to open.
This is a 5v to 9v battery case and charger housing designed to turn a normal car charger into a portable battery charger that accepts standard 9v batteries.
Its based on this youtube video: https://www.youtube.com/watch?v=Akqcos28R-0
You will need:
1x 9V battery
1x cigarette-plug-style car charger such as this: https://www.walmart.com/ip/INSTEN-Universal-USB-Mini-Car-Charger-Adapter-White-For-LG-Nexus-4-5-Samsung-Galaxy-S2-S3-S4-Note-3-N9000-iPhone-5S-5C/28882850
1x 9 volt battery plug: https://www.amazon.com/5pack-Battery-Clips-leads-Corpco/dp/B01GMA8VUW/ref=sr_1_3?ie=UTF8&qid=1483990934&sr=8-3&keywords=9v+plug
1x case
~1" of 16 ga wire for the hinge (you can use your 1.75mm filament too!)
Tools you will need:
A sword of Exact-0.
Soldering Iron
Assembly instructions: (Will publish assembly video eventually!)
Print the case
Disassemble the charger, and remove the electronics inside.
Solder the positive lead to the terminal, and the ground to one of the common grounds
Insert the new unit into the battery case. You may need to either adjust or shave the posts to ensure a good fit. I have included the bottom .sldprt for you to modify if you need to for your specific application.
When ready to charge, plug in the 9v battery.