I'm trying to make a small retropie emulator with a Raspberry Pi Zero. I would preferable like to make it as small as possible. I am thinking of using this premade HAT for the Pi, as I am not very well versed with Raspberry Pi yet. Here's the link to the hat, but that does not come with any battery solution. How would I go about adding a battery and charging system to it? Could I just solder a battery connected to this directly to the same GPIO pins used for the HAT? Any advice is helpful.
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