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techntrek View Drop Down
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Posts: 9062 		Post Options Post Options   Quote techntrek Quote  Post ReplyReply Direct Link To This Post Topic: List Your Mods:
    Posted: 06 Aug 2015 at 8:40pm
Sorry it wasn't clear.  To put it another way, if you attach the positive and negative to the same battery (after paralleling them), then you will encounter the charge and discharge imbalance the poster on the prior page was talking about.  So you must attach to the positive of one battery and the negative of the other.  Also you need to be sure the paralleling wires and the positive and negative wires are the same length.

But this is all a non-issue with 6 volt batteries in series.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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Posts: 281 		Post Options Post Options   Quote sailor323 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2015 at 4:57pm
Originally posted by techntrek

Fred is correct.  Adnd if they are two 12 volt batteries they must be wired correctly (+ to one battery, - to the other battery).  Then they will be fine.


techntrek, I know you know what you are talking about, your infois always spot on.  This post is a bit unclear.  Just to clarify matters, if you have two 12 volt batteries and want a 12 volt bank of batteries, connect the positive of each battery to the positive of the other and the negative of each battery to the negative of each battery.  Take your power from the positive and negative of either battery.  Actually, I like to take the power from the positive of one battery and the negative of the other.  I attach the charging cable the same way, positive of one battery and the negative of the other. 

If you have two 6 volt batteries and want a 12 volt bank, connect the positive of one battery to the negative of the other, then take your power from the remaining posts.

I know that you know this but I felt your post didn't state that clearly.  I just didn't want someone to become confused.
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furpod View Drop Down
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Posts: 6128 		Post Options Post Options   Quote furpod Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2015 at 4:51pm
Originally posted by ilthyn

Not sure what you mean by powering an inverter off my Ram. It does have a 110v outlet in the cab but it is limited wattage. The solar is free and silent.



I think he means why not hook an inverter to the Ram's battery, rather than carry another battery to hook it to, which is what you are doing now. It's just different ways to get to the same place.
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Posts: 64 		Post Options Post Options   Quote ilthyn Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2015 at 1:05pm
Not sure what you mean by powering an inverter off my Ram. It does have a 110v outlet in the cab but it is limited wattage. The solar is free and silent.
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furpod View Drop Down
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Posts: 6128 		Post Options Post Options   Quote furpod Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2015 at 12:27pm
Originally posted by JandL

I went with the single battery for simplicity. The problem with multiple batteries is after a while one would get weaker and the stronger battery would discharging into to the weaker battery to try to bring it to the same voltage. I would have purchased a group 31 but Costco doesn’t carry them. Someday when I have to replace it I will go to Sam’s Club because they carry group 31 batteries. Any battery bigger than that, I would need a forklift to lift it in place. I also have a generator, but the solar panel makes no noise.


This simply is not true with matched batteries that are properly wired and maintained. I have more than 40 years working with both small and large multi battery systems, 6v, 12v, and 24v systems, and have never seen this when done correctly.
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Jonknite View Drop Down
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Posts: 19 		Post Options Post Options   Quote Jonknite Quote  Post ReplyReply Direct Link To This Post Posted: 06 Aug 2015 at 10:37am
I too prefer solar charging when possible, I bought an R-Pod because I can take it off the beaten path. There is NOTHING worse than the constant drone of someone's generator when I'm trying to get away from it all.
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techntrek View Drop Down
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Posts: 9062 		Post Options Post Options   Quote techntrek Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2015 at 10:24pm
Fred is correct.  Adnd if they are two 12 volt batteries they must be wired correctly (+ to one battery, - to the other battery).  Then they will be fine.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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fwunder View Drop Down
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Posts: 1676 		Post Options Post Options   Quote fwunder Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2015 at 8:53pm
Originally posted by JandL

I went with the single battery for simplicity. The problem with multiple batteries is after a while one would get weaker and the stronger battery would discharging into to the weaker battery to try to bring it to the same voltage.

Two new identical batteries will not asymmetrically discharge, no matter if they are in series (6 volt) or parallel (12 volt)...as far as I know. I understand your logic, just want to make sure we pass along good info.

fred
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Yes, those are wild ponies dining on grass while dumping tanks!
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JandL View Drop Down
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Posts: 364 		Post Options Post Options   Quote JandL Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2015 at 8:44pm
Solar Panel cost
I am adding a price list to the solar panel installation I did my trailer

Manual reset circuit breaker 10 amps Bussmann #25510-B-2 $15.78 (Waytek Inc.)
Attwood marine Large Battery Box #9084-1 $22.57 (Amazon)
Parent Units 2 Pack Topple Stop Furniture Straps $15.66 set of 2 (Amazon)
Solar Pv Cable - 30ft / 12 AWG - Mc4 Solar Photovoltaic Copper Conductor Cable $17.00 (Amazon)
Camco Gray Party Light Holder # 42693 $6.48 Pack of 7 (Amazon)
Quick-Grip 4-Inch Handi-Clamp 59400CD $8.00 ea. 2 req. (Home Depot)
Morningstar SK-12 SunKeeper 12 Amp PWM Charge Controller 12 Volt $79.60 (Amazon)
Group 27 Battery #12852 $86.99 (Costco)
Grape Solar 100 watt panel #773274 $139.00 (Costco)
SB50 SB Series 50 Amp Anderson Powerpole Kit #SB50-10-RED $3.08 ea 2 req. (Powerwerx)
Dust Cover for SB50 Amp Series Housings #DUST-SB50 $3.49 (Powerwerx)
Safety Boot for SB50 Amp Housings # Boot-SB50 $3.29 (Powerwerx)

Total cost $408.94. If you take out the battery and battery box because everyone is going to need a battery and box or may have them already, the cost is $299.38
JandL
2013 Honda Ridgeline
2012 177
2 Paynes in a Pod
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JandL View Drop Down
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Posts: 364 		Post Options Post Options   Quote JandL Quote  Post ReplyReply Direct Link To This Post Posted: 05 Aug 2015 at 8:40pm
I went with the single battery for simplicity. The problem with multiple batteries is after a while one would get weaker and the stronger battery would discharging into to the weaker battery to try to bring it to the same voltage. I would have purchased a group 31 but Costco doesn’t carry them. Someday when I have to replace it I will go to Sam’s Club because they carry group 31 batteries. Any battery bigger than that, I would need a forklift to lift it in place. I also have a generator, but the solar panel makes no noise.
JandL
2013 Honda Ridgeline
2012 177
2 Paynes in a Pod
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