Weekly Project: Go Green GBA--A Solar-Powered Game Boy Advance

Step 4 Roll Your Own

Lay the three NiMH batteries on a flat surface with the polarity of the terminals flipped (i.e., positive up, negative up, positive up). These flipped poles must now be connected together. Either a shorting clip or a piece of scrap wire can be used for soldering the alternating terminals together.

First, identify a positive and a negative terminal--these poles should be singularly labeled on each of the end battery pack. In other words, the positive terminal could be the left battery whereas the negative terminal would then be the right battery. Solder the red and black power leads from the Solar PAK to the respective terminals.

Complete the replacement battery pack by taping all three batteries together with a length of electrical tape. Secure the pack inside the Solar PAK with a piece of double-sided foam tape and reinsert the Triwing fasteners.