[bill-e]

So I measure about 1/2 amp parasitic drain from the frame heater on my 8cf Fridge. I installed the switch in the light circuit.

My 200w Zamp panel puts out about 14a (verified) at peak her in New Hampshire. Zamp claims it's good enough for the average camper as it can charge about 40-60ah a day and that they believe the average camper uses around 40ah/day. It certainly works for my usage.

I'm going to guess that your 120w panels are good for about 30ah in a normal day. So lets just suppose that you have 200ah of battery and discharge it 50%, it would take you 3+ days to recharge it.

You should go to one of the online solar power consumption web pages and enter your data, it will give you an idea of what your consumption is per day.

I'm guessing your panel is undersized for what you want.