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Old 11-09-2018, 06:29 PM   #1 (permalink)
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Keep blowing my solar panel controller

Hi! Here is my setup. 20watt solar panel in rear window on 1980 300d diesel Mercedes. It runs through a controller that keeps the massive diesel starting battery topped off. I've blown two solar controllers and was wondering if the massive current draw from the batterywhen I start this beasty, is somehow sucking the life out of my solar controller. They work for 3 to 6 months. When I did this rig on my super Volvo, I did not have any failures. Cheers!

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Old 11-09-2018, 08:50 PM   #2 (permalink)
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I believe that is what the controller is supposed to do. Block reverse current. I ordered another one. I'm thinking of adding a switch to Cut the controller off, when I start the car. It seems dumb. Sc
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Old 11-10-2018, 02:14 PM   #3 (permalink)
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Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

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90 day: 132.26 mpg (US)

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What kind of controller are you using?

We use Morningstar sunsavers at work, they work great.
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Old 11-10-2018, 02:26 PM   #4 (permalink)
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Firefly EV - '98 Pontiac Firefly EV
90 day: 107.65 mpg (US)

Little Boy Blue - '05 Toyota Echo
90 day: 33.35 mpg (US)

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Specs on the controller?

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