I think this charge controller will work

Circus

Feeling the Heat
Jan 11, 2013
289
EC Wisconsin
Just bought two 360w panels for my vehicle. Definite overkill to baby my old batteries and compensate for the dark WI winter. Want to keep the batteries @12volt. How big of a charge controller do I need?

Two of these panels
solar panel.JPG

Will this charge controller work?
Esmart3 specs cropped.jpg
 

ABMax24

Minister of Fire
That looks like what you'll need. The 40 amp would be too small for both panels.

But what is this for? 720watts is a lot of output.
 

Circus

Feeling the Heat
Jan 11, 2013
289
EC Wisconsin
But what is this for? 720watts is a lot of output.
It is? It'll be horizontal all the time. I'm not a, fiddle with it, guy. I see advantages over doing the panels, see disadvantages when converse. Hoping it'll make the old flooded batteries last. Battery prices are frightening by comparison.
 

ABMax24

Minister of Fire
It is? It'll be horizontal all the time. I'm not a, fiddle with it, guy. I see advantages over doing the panels, see disadvantages when converse. Hoping it'll make the old flooded batteries last. Battery prices are frightening by comparison.
What are the solar panels being installed on? How big of batteries are they charging and what are the batteries for?
 

Circus

Feeling the Heat
Jan 11, 2013
289
EC Wisconsin
What are the solar panels being installed on? How big of batteries are they charging and what are the batteries for?
I know it's too big, now. Old batteries 240 Ah.. I plan to have both panels stacked on the roof of a minivan traveling, accessing one panel, then on site the lower panel is pulled out from the side using a quasi full extending drawer slide. Would like to avoid the wasteful upgrading suffered from 90% of the videos I've seen. Guess the question is, what's the harm? Is it possible idle PV panels do damage or something? It'll all be transferable to my next vehicle just like my 20 year old roof rack. Camping, avoiding motel bills, microwave, maybe a fridge, diesel heater, daytime AC, jumping bolts stranded on the side of the road :). Who knows, maybe the end of civilization.
 
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sloeffle

Minister of Fire
Mar 1, 2012
704
Central Ohio
I know it's too big, now. Old batteries 240 Ah.. I plan to have both panels stacked on the roof of a minivan traveling, accessing one panel, then on site the lower panel is pulled out from the side using a quasi full extending drawer slide. Would like to avoid the wasteful upgrading suffered from 90% of the videos I've seen. Guess the question is, what's the harm? Is it possible idle PV panels do damage or something? It'll all be transferable to my next vehicle just like my 20 year old roof rack. Camping, avoiding motel bills, microwave, maybe a fridge, diesel heater, daytime AC, jumping bolts stranded on the side of the road :). Who knows, maybe the end of civilization.
Pictures please :)
 

sloeffle

Minister of Fire
Mar 1, 2012
704
Central Ohio
Just got the mppt and drained one battery with a 50w bulb over night, so everything being bench tested in my back yard.
The photo is definitely not as dramatic as I was expecting. ;lol Based on your previous post I was hoping to see some solar panels attached to the top of your minivan.
 

Circus

Feeling the Heat
Jan 11, 2013
289
EC Wisconsin
The photo is definitely not as dramatic as I was expecting. ;lol Based on your previous post I was hoping to see some solar panels attached to the top of your minivan.
Give me time. Mount design is in flux. It's easier when I knew what the pieces look like. A fully extending drawer slide design is problematic. The present design has both panels on quasi halfway extending drawer slides. Top panel go's half way to the left, bottom half way right.