pianotuna wrote:
Going with 35 amps and a 1/3 duty cycle that 90 minutes becomes 270 minutes or 6.5 hours. However, in real life, because of the intermittent nature of the load there would be some recovery.
A good solar installation would run the fridge for free forever.
By good solar installation, you mean several panels, not camping in the woods, not camping in the fall or winter when the sun is low in the horizon, and avoiding areas and times of the year with substantial cloud cover and of course spending on a substantial battery bank.