For Occasional Recovery: Look to 15-20 watt panels minimum, recognizing that recovery will take multiple days of good sunlight. For Cold Climates or Larger Vehicles: Increase your calculated wattage by 25-50% to account for reduced efficiency and higher power needs.
[PDF Version]
On average, a 120-watt solar panel produces about 500-700 watt-hours of power in a day, depending on the number of peak sun hours your solar panel receives.
[PDF Version]
This estimate depends mainly on four key factors: panel watt rating (Wp), number of panels, peak sun hours (PSH), and system derate or losses.
[PDF Version]
For a typical 12V 100Ah LiFePO4 battery with a 200W panel and MPPT controller, that comes out to about 5 hours of peak sun, or one full sunny day.
[PDF Version]
