Retroflag GPi LiPo back

thingiverse

I designed this backplate after losing my USB to micro pin power adapter due to various projects piling up around me. With an abundance of LiPo batteries at hand, I found that the ones from the GameBoyNull kit would fit snugly into the back of the GPi, but needed extra depth for the charger circuit. I opted for this approach because I wanted to be able to quickly swap exhausted LiPos with AA batteries when traveling and unable to access a USB port for some inexplicable reason. To get this done, I borrowed designs from others. The Dummy AA batteries design at Thingiverse was particularly helpful (https://www.thingiverse.com/thing:1872669). I also made use of the DMG GameBoy battery cover design (https://www.thingiverse.com/thing:104919). However, upon printing two dummy AA batteries, I realized they were too thick to accommodate my LiPo. So, I cut one in half lengthwise and placed the positive lead on one half while the negative lead went into the other half. This provided excellent pressure on the internal battery mounts for my new Lithium battery. I resized the DMG battery cover and moved its two tabs slightly to fit the GPi. Then, I had to make it deeper using Tinkercad, resulting in somewhat square corners - a compromise I made due to time constraints. If possible, I would have preferred to use Fusion for a more polished finish.