The fact that the optimal voltage from an automotive alternator while charging is 14.4 volts and this set is rated for just that, made this a perfect match to be run of any 12 volt source. More specifically any car battery or accessory outlet. I keep it in my daily driver just in case I have to change a tire and need light or whatever else may come up.
I also do work in the field frequently, and the drill has saved me a couple times when my newer 19.2V Craftsman has ran out of juice.
Step 1: 1.0
-The charger had positive and negative labeled so I just plugged them in accordingly inside the handle of the drill and light.
-I then drilled 2 holes so I could ziptie the wires to ensure I didn't yank out the connectors.
-These tools without the batteries are extremely light. They also no longer have a flat base on which to stand.
-I liked that they functioned but there was a better way...
Step 2: Gut Battery Packs
-You can see on the top of the battery packs, the terminals are just male spade connectors.
-The battery pack then just lifts right out, I put them in plastic bag and took them to the recycling center.
Step 3: Wire It Up
-Did a test fit to make sure it lined up.(It worked but the spades were a pain to get out, that was dumb)
-Crimped 6" or so of wire to the male spades and ran them through the holes.
-I then crimp connected it to a 2 conductor wire I stole from some other dvd player(see next step). The other end was crimp connected to the 12 volt accessory plug.
Step 4: Notch, Glue and Reassemble.
I used hot glue to hold the male spades in place.
Reassembly is just reinstalling the 5 Torx screws.
Step 5: Final Fit
Thanks for checking it out!