I'm trying to wrap my head around how exactly Amp Hours work. I have been trying to figure out this question for a while now, but can't seem to find the information that I need.
This is the circuit, and the information given is that the battery has 20AH capacity, and has a constant voltage 11.5 V. The question is to calculate how long it would take the battery to fully charge from being completely discharged.
What exactly is Amp Hours, and what is the formula to calculate it? I have noticed on many web pages that this is being calculated when the current of the circuit is given, but nothing about what to do when the voltage is given.
Edit: I know I can calculate the current in the circuit using ohms law, but I don't know what to do to calculate the time it takes to calculate how long it will take to charge to full.