Please Note: If you plan on powering A/C loads, you'll need to divide the rated watts
of each load by the battery bank's operational voltage.
For example, a 200-watt A/C load divided by 12-volts equals an hourly amperage
consumption of 16-17 amps per hour.
Then, by multiplying the amperage consumption by the approximate runtime,
you'll get the amp-hours needed to run your loads. In this case, 17 amps multiplied
by 2 hours equals 34 amp-hours.
Doing this helps to determine whether or not the battery bank can handle the
sum of simultaneous loads or if the battery needs to be sized up to ensure it
will not deplete.