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Old 03-23-2016, 08:22 PM   #11
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Old 03-23-2016, 08:24 PM   #12
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Originally Posted by jgerhard View Post
Hi Klassic,

I still only have the stock single group 27 flooded that came with the rig. I love Jmooney's battery set-up though! I'm probably end up with two batteries. I may add another 12V group 27 until it and and stock get weak, and then switch to (2) 6V big Trojans.

James
It's not advised to add another battery that's different , or a different age than its partner. ( parasitic issues)

If your ready to add battery, your better off replacing both at the same time
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Old 03-23-2016, 09:32 PM   #13
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I already know that, thanks. The battery is 4 weeks old and I'm adding the same manufacturer.
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Old 03-23-2016, 09:34 PM   #14
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Curious why you chose a pulse width modulated (PWM) controller?

James
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Old 03-23-2016, 09:43 PM   #15
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Came with the solar package
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Old 03-23-2016, 10:07 PM   #16
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Twin panels. One up front, one in the rear
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Old 03-23-2016, 10:13 PM   #17
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Did you drop the wires down the stink pipe?
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Old 03-24-2016, 08:27 AM   #18
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From JMooney's picture it looks like he did. I went down the refer chase. I used the refer method because of where I was mounting my controller, the remote panel, and the proximity to my battery (soon to be batteries).

James
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Old 03-24-2016, 09:05 AM   #19
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Curious why you chose a pulse width modulated (PWM) controller?

James
I know this was directed at Jmooney but I also chose to go with PWM over MPPT. The biggest reason is cost. A good MPPT controller is way more expensive than a good PWM controller. You can get high voltage panels cheaper than the "12volt" panels but I would need a 700Watt system to break even with the cost of the MPPT controller.

The second reason is I don't believe you get the benefits that MPPT claim. Yes you do get more "power" from them but I think it is marginal (5-10%) and only in ideal conditions. I would rather add an extra panel and get more power all the time rather than an MPPT controller and only get a little boost when conditions are right. And adding an extra panel is still cheaper.

When MPPT makes sense......
  • You want or have high voltage panels.
  • You have a prewired trailer or MH that uses small gauge wire
  • You are building a large 600+ watt system
  • You have long wire runs and want to run high voltage to reduce losses

Hope that helps.

Cheers
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Old 03-24-2016, 09:46 AM   #20
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Did you drop the wires down the stink pipe?
Down the vent , only about 2 feet, then pulled the wire back out in my closet, sealed it up, and ran the wires along side the pipe into the basement and forward to the power room
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