I like to tap mine a bit with my fist. If it's firm, but not hard and gives a soft sound, that's the way I like it.

I don't know what I'm doing.

The relay module has optocouplers, which suggests that it is intended to be controlled directly. I have done that before. The power consumption should be okay, but I should check anyway.

Just voltage divider circuits and reading them, then?

Aw yeah!

I don't actually really know what I'm doing. I'm unsure how to use a comparator to verify that the battery voltage matches the input while it is still charging, or how to check if the battery voltage is below 5.79V specifically to shut off the output.

I also have no clue how to choose resistors.

Input: 3.8V - 30V 3A
(Voltage can be narrower)

Charging: 7.05V - 7.2V Up to 2.1A
0.7A - 1.5A is ideal. ~10W

Load: 5.79V - 7.2V 10A Max (fused)
Also converted to 5V up to 3A

I still need a high/low voltage cutoff, so my buck/boost converter doesn't get damaged. I think a third relay is needed.

I have an LM393 comparator, two IRF740 MOSFETS, to drive two relays and a 5.1v zener diode. I have more components, but those are the ones I'm more confident that I'll need.

Oh yeah? Do it then. I dare you.

Art can be intentional and unintentional, detailed and even strategically lacking. There is personality, intelligence, and ignorance in the things we make. The thought of "how can this be better?" drives change in it, but you may never know one of many answers. You may not even know it was art.

I usually say this when discussing music, but it applies to all art forms. Music can be just background noise for me, but when I choose to really listen, I want to feel something. I listen to music that evokes emotions, which, in the moment, aren't alone, but transform into overwhelming joy.

Not really, but I need one for 6V batteries with a load and a dummy load. Can't seem to find wind ones for 6v.