Maximum <span class="highlight">solar</span> <span class="highlight">panel</span> size without regulator

Yep 120w panels and regulator are only around $200 on Ebay so 6w for $40 is not very good.

hi the mighty moose
i agree with bbuzz those small panels are strickly for trickle charging a battery while the vehicle/boat /car/tractor etc is parked up and 4-5-6watt dont require a controller
i use a 12watt panel to keep my large deep cycle camper trailer battery charged while its stored but that has a charge controller
but if your going to run a fridge plus some other appliance like said you need a decent panel that will pump some power back into the battery and be at least equal or more than the drawn amps or it will very quickly go flat and not all days are full on sunny
i have a 4 watt panel permantly mounted on the combing rail between my cabs on the bravo and it does an excellent job trickle feeding the 2 batterys while its not been driven
but i have an 80watt folding portable panel that i take camping when i run the 40ltr engel off the second battery and that system has proven itself and works great for my purposes
but i dont have kids opening the fridge every hour to get a cold drink and i'm not drinker myself
so not stocking the fridge with unchilled cans either
you have to weigh up the situations that the solar panel has to service every ones situation is quiet different
if you have a family you will probably find a 120watt panel would be the better option in your case
hope this has been usefull
cheers

Is in the first sentence of the original post.

Couldn't agree more those 6W etc panels are a complete ripoff. For that kind of money you could get 30W or more.