Control the power

etting up a vehicle-based 12 Volt system to charge the battery or batteries that will power all your off-grid appliances involves quite a few choices. Once you can establish your typical camping power draws in Watts or Amps over each 24-hour period (from the fridge, lights, pumps, and other devices), you can size the battery needed in terms of Amp hours. From there, one can establish the output needed from the solar panel array required to keep the battery (or series of batteries) at a decent state of charge.