Someone I know bought a 12V deep-cycle battery for their vehicle, for camping trips and they asked me a question...
I've often read comments like, "If you regularly discharge a deep-cycle battery only 40%, it will have a longer life than if you discharged it 60%."
Well... How do you tell how far you've discharged it? (How do you figure out what percentage capacity remains in a battery?)
Thanks for reading...
Allan.