The best batteries for solar usage are deep-cycle/marine style 12V “car” batteries. Designing around 12V batteries, I calculated the draw of my 210Wh load at 17.5 Amp hours (remember kids, amps times volts equals watts!) This means I’d need a battery rated at least 140Ah in order to hit my theoretical 8 hour gameplay goal. Accounting for the odd rainy weekend, I wanted to be able to get 8 hours of use on a full charge. “Since I was mostly going to play at night, I needed batteries to store the sun’s energy over the course of the day.
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