Roy Lewallen wrote:
"Ah is a unit of charge, not energy."

The most common 12-volt battery is the lead-acid storage battery used in
automobiles. It should not be allowed to become completely discharged
nor to remain less than fully charged for a long time. The battery`s
capacity is rated in amperes x hours. The discharge rate is assumed to
be 8 hours. Slower discharges can be supported for more ampere-hours and
faster discharges likely won`t meet the rated ampere-hour product.

A 50 Ah battery would be expected to deliver about 6.25 A for a period
of 8 hours provided its electrolyte does not rise to more than 110
degrees F. 2-volt cells can be discharged down to 1.75 volts per cell
or a voltage of 10.5 volts for the 6 cells of a 12-volt battery.

Best regards, Richard Harrison, KB5WZI