I want to display the battery percentage of a flooded lead acid battery.
I know that the percentage of the charge can be achieved from the voltage of the battery, bot only of the battery was free for at-lease an hour from either discharge or charge.
Below I have attached the terminal voltage chart of the lead acid battery
But I am worried that the terminal voltage under load will not show the actual battery voltage.
How can I display the percentage under load and free from load..?
The display will constantly be fluctuating..