I have done quite a lot with the project sense the last update. I have got five fresh 18650 batteries to test it with. So far I have had mixed results, on the test after the first charge I was able to get nearly the capacity given by the manufacturer, but in proceeding tests the capacity that I was able to get started to go down. I will never be able to get full capacity because the low battery cutoff voltage in my system is a bit higher than the cutoff voltage given by the manufacturer. I also know that there is some systematic error with my scraped together current sink that I am using for testing; the current starts to drift up with time.

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I have also made a 3D printed enclosure for the project, I still need to make some type of lid.