Since I have a photovoltaic system with a purposefully undersized battery bank, refrigeration was a challenge. I succeeded.

My fridge does not run from battery at all, only when the sun is shining. It's computer controlled and quite complex, so for more about how it works, see fridge 0.1 and fridge 0.2.

This is no longer really necessary since my solar system has been upgraded quite a lot, but it's still nice to know that the fridge's control software can handle any low battery situation with aplomb.