Wow! Well done, beorn!
I can see major advantages of using that to keep things charged.
Do have a couple of questions, however.
When the first relay switches to on, does it divert all energy to that load and remove the feed from the initial load (batteries I imagine) or does it add the second load to the first one, charging (or running) both at the same time?
Same question as more relays are activated?
Also, if, say, the second load is still taking power, but the feed is high enough to activate the third load, does the relay open and stop feeding the second load and only feed the third load, or do both continue to get power? Then, if the second load still needs power, but the third load is fully charged, with that relay open and the fourth relay close, feeding power to the fourth load?
Keep up the good work. I really enjoy your videos and learn so much from them.
Just my opinion.