electrical cart before the horse

So I wanted  a refrigerator on Bagatelle.I bought a ICE CO refrigerator. After which I discovered I didn't think well ahead of time.
The refrigerator uses 8 amps.
When the cool section is 37° and the freezer is 0°. If I let the refrigerator run for 4 hours without being connected to AC power, then the battery that it was on, a 65 amp hour battery, was down to less than half capacity. 
The motor when it's running puts out 6 amps. I have a trickle charger on the boat that keeps the batteries well charged while it's on the AC power.
But once I leave AC power I need some way to keep the batteries up, so that I can run my refrigerator as well as the lights and the radio. 

 I'm buying solar cells in order to keep the battery up while running the boat off the grid.
 The pilot house  roof has room for a 50 watt solar cell on each side of the hatch. And I'm going to put another 100 watt solar cell on top of the Bimini removable when the Bimini is down.
I will also add an automatic charge relay so that while the batteries are charging both batteries will be charged.

When I bought the boat I also bought a dual battery charger to keep the batteries up but now that I have the automatic charge relay I'm going to replace that with a single high capacity battery charger so that when I get to a marina I can top up the batteries while I'm at the dock in less than a few hours.

Today I received the solar cells from Renology. On Tuesday I received the solar cell from Walmart the social from Walmart was 50 Watts and the solar cell from Renology is also 50 watts. The one from Renology is bigger than the one from Walmart and that might present a problem since I want to put it on the coach roof between the hatch and this side rails.

More of this story to come 

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