Building a charge/discharge cycle for AAA Batteries with Arduino

Hello guys,
I am currently working on a project where I want to test AAA Batteries on their wear. For that I want to build an automated charging and discharging cycle, which charges to a specific voltage and as soon as it reaches that voltage it switches to discharge and so on. Does anybody have an idea or an approach on how to implement this?
Already searched through the internet but did not really find anything concerning AAA cycles, only 18650 cycles.
Hope someone can help me out, thanks in advance.

The basic approach you found for 18650 cells will work for any battery, with minor changes.

I looked at this series GitHub - chrisabird/18650_station: Arduino controller 18650 charge and discharge station and it seems like it should work but as soon as I tried out the code on the Arduino errors occured.

If you want help fixing those errors, a good place to start is to read and follow the instructions in the "How to get the best out of this forum" post, linked at the head of every forum category.

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