Shore and Solar Power Schematic

[MadMango]

Anyone care to give me a sanity check on this schematic? This is for a camping trailer I'm building. I want the ability to connect to shore power when it's available, and also run on solar when it's not. I also just realized that the polarities are swapped on the output of the charge controller.

"Art without engineering is dreaming; Engineering without art is calculating."

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[LittleInch]

Ok, an appollo 13 job!

So what are the bits you have?

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[LionelHutz]

I can't keep it straight. You posted you had the 1800W inverter available...

 

[MadMango]

On-hand (most links are representative only):
battery charger
1800w inverter
350w inverter
120w inverter
30A PWM charge controller
2X 100w solar panel
12v distribution center
2X LED Lights
12v Vent Fan
12v Mini Fan

Thinking to purchase:
smart battery tender
120v outlet with USB charging
12v power port with USB

"Art without engineering is dreaming; Engineering without art is calculating."

Have you read faq731-376 to make the best use of these Forums?

 

[LionelHutz]

You definitely need a good battery charger/maintainer matched to the battery technology, not a simple charger like that.

I'd be pretty dubious of the 350W inverter linked being too useful. Cheap ones like that typically have a crappy output waveform and no surge capability.

The LED lights you linked were 120V, not 12V???

Installing 120V receptacles means you're not just going to feed a power strip with the inverter anymore? It's quite possible, but you'll need to build some power distribution on the 120V side.

You can get 12V powered USB port panels without needing a lighter port with an adapter plugged into it. You can also get combination USB port and lighter port panels. Using one with an adapter means it'll get misplaced or lost or be taken and re-purposed in a car.

 

[jraef]

When you have multiple batteries like that, you should have a battery isolator. Otherwise, as one battery starts to fail, it will become a load on the other one and drag it down with it.


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