Hello! This video will help you size solar components for your off-grid system such as batteries, inverters and controllers.
How to Calculate Amp-Hours for Battery Sizing:
Amp-Hours = Watt-Hours/Volts
Example: Sizing a Battery for a 65W TV that runs 10 hours a day (from video 3/6)
Consumption: 650Wh/12V = 54.167Ah
Ideal Battery Size (Double Consumption): 54.167Ah x 2 = 108.33Ah*
*The battery you choose does not need to be this exact number, but should be within a 10-20% range.
How to size your inverter:
inverter size = total wattage needs
800W (fridge) + 300W (fan) = 1100W
Therefore you would need an inverter larger than 1000W for your system.
*Please note that your inverter's voltage must match your battery bank's voltage.