Double Capacity MintyBoost with 4-AA Battery Holder Modification

Step 8 Mount the negative terminal

Take the negative spring terminal that you created in step 6 and route the wire through the rectangular hole in the bottom of the battery holder in the outer battery compartment next to the slit you just cut. The wire will be routed next to the existing wire connected to the rivet as show in the first image below.

As you feed the wire through the hole lower the spring into its original position. While sliding the spring into its original position wedge the wire connected to the spring into the slit that you cut. This should hold the spring in place fairly well. Make sure the spring is sitting very close to its’ original position so that it will make proper contact when the battery is installed.

You should add a dab of epoxy, JB Weld/JB Kwik or similar hard drying adhesive into the slit at the point indicated by the blue arrow in the second image below to lock the wire and spring in place.

Once this step is completed turn the battery holder over like in the last image below and you will see the long black wire you just added (battery bank 2 negative lead) and the remaining half of the wire you cut earlier (battery band 2 positive lead).