Drill Battery Charger Modifaction

Here is a modification to a Milwaukee battery charger, one of the MFW instructors wanted to power 12 volts externally to the charger and battery, basically use the charger and battery as a power source.

So my students took the charger apart and did some research on the battery to make sure that the battery contacts where always on and connected directly to the cell and not switched on or off with a MOSFET. Once verified we tried it out and works get, just like a small UPS power supply.