The circuit he’s building here is a solar charger for the super capacitor. Being a fairly small device there’s not a lot of current, voltage, or energy, but these are different enough from ...

Thus, he elected to build himself a much larger supercapacitor ... The pack was given balance leads to ensure that no individual capacitor was charged beyond its 3.0 V rating.

But, Heat Capacitors do you a default value of 180,000 Units. They are particularly easy to make once you're farming and cultivating them at your base regularly, making them aneasy way to build up ...