Calculating Your RV Solar Power Needs
This requires only a little math and a realistic assessment of how much power you actually use. The formula for computing amp hours is the number of hours multiplied by the number of amps used per hour. For example, one light uses 1.5 amps x 6 hours = 9.0 amps per hour and your television uses 1.4 amps x 3 hours = 4.2 amps per hour.