Hercules Battery Adapter

This is a battery adapter for the Hercules 20v lithium ion batteries found at Harbor Freight.

Remixed from this thing (https://www.thingiverse.com/thing:2435964)

Changes made:
- Added some length to the sides
- Removed some length from the notched area so that it would fit the battery
- Countersunk the m3 mounting holes. I used 3mm x 8mm screws for this. (what I had laying around)

**NOTE**
This connects directly to output voltage of the battery (~17v - 20v) There is no over-voltag