David replied:

Les, first you must work out what amperage your fridge is drawing, eg. a 60 lt Engel running on freeze draws approximatly 5 amps, multiply this by by the voltage, ie, 12volts, this will give you the size panel you will require in watts = 60 watt panel, this will keep your deep cycle battery fully charged, providing that you are getting full sun.ŒIf you are running your fridge only as a fridge and not as a freezer you wont need such a big panel as the fridge will cycle on and off, hope this has been of some help, cheers, David.