This is supplied through the solar panels, which requires the sun to charge them. There is also a power point that can be plugged in at the campsite to charge the battery and supply power. The Gidget can run for days with just the solar panel charging the battery. If you have an Anderson plug fitted to your vehicle, and whilst driving, this charges the Gidget battery for endless supply of power.
8 hours of sunlight on solar panel = 52 amps per day.
Fridge: 0.77 amps x 24 hours = 18.5 amps
Lights: All on for 4 hours = 3.2 amps
TV/stereo: For 3 hours = 7.2 amps
Total used 28.9 amps per day
Solar supply = 52 amps per day
Used as per example = 28.9 amps per day, so you still have 23.1 amp left in reserve