Double Capacity MintyBoost with 4-AA Battery Holder Modification

Step 7 Create battery terminal mounting point

Take a look at the image below and note the point indicated by the blue arrow. In order to mount the negative battery terminal that we created in the previous step we need to cut a slit in the battery compartment separator at that point. The slit needs to be slightly narrower than the diameter of the wire we connected to the spring in the previous step (see the second image below). This is so we can wedge the wire into the slit so it is held in place. I used a Dremel cutting wheel to make the perfectly sized slit. But you could use any number of tools to make the cut since the plastic is not very hard.