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05-05-2015, 01:36 PM
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#1
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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DC system monitoring
Here is a new meter panel I have been building to monitor battery systems in my coach. These monitor chassis battery, coach batteries and my solar batteries. At a glance I can see what everybody is doing, and make sure everybody is charging. These are liquid crystal meters with a single LED for backlight. Very low current draw.
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05-05-2015, 02:01 PM
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#2
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Senior Member
Join Date: Jul 2014
Posts: 409
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interesting post but I can not open anything
Hope you can correct it
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05-05-2015, 05:35 PM
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#3
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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Lets try this picture
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05-05-2015, 05:48 PM
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#4
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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05-05-2015, 07:05 PM
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#5
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Aug 2014
Posts: 1,899
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Thanks Aviator...you just cost me $10...
Saw the Dual USB plug and had to have one.
Will replace the single socket in the dash.
Good job on the voltmeter install.
Dan
__________________
2014 40QBH Phaeton DP Cummins 380HP ISL, Freightliner XC, 2019 Jeep Grand Cherokee Trailhawk TOAD
Blue Ox Aventa tow bar, SMI Air Force One -Cave Creek, AZ.
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05-05-2015, 07:26 PM
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#6
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Senior Member
Join Date: Feb 2010
Posts: 4,654
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There are other meters that have dual display that includes amps.
Requires external shunt but a kit for about 19 bucks...
Such a deal...
__________________
Tony & Lori
1989 Country Coach Savannah SE
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05-05-2015, 09:34 PM
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#7
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Senior Member
Join Date: Feb 2010
Posts: 4,654
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So we went to ebay and found led versions which are smaller but can fit inside a cabinet for a past project.
$1.72 with free shipping...ordered 20...
Then found a volt and amp display with 500 amp shunt witg free shipping for 15.88...ordered 2...
Going back for a 48 volt voltmeter...
__________________
Tony & Lori
1989 Country Coach Savannah SE
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05-06-2015, 07:42 AM
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#8
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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I have been evaluating inexpensive meters that measure current with a shunt and have not been happy with them. They calibrate pretty well in a high current environment, but had problems with low current monitoring. There are a number of meters for both AC and DC available these days. Try to stick with liquid crystal displays to minimize current draw. The meters I chose are 4 digit, many are only 3, and the LED lamp is easily disconnected if you don't want it. These came out of the box calibrated and all three were within a tenth of a volt without adjustment. For me, the voltage monitoring was important to monitor charging. The meters operate when the batteries are connected. The solar one stays on all the time.
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05-06-2015, 08:00 AM
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#9
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by aviator37
Here is a new meter panel I have been building to monitor battery systems in my coach. These monitor chassis battery, coach batteries and my solar batteries. At a glance I can see what everybody is doing, and make sure everybody is charging. These are liquid crystal meters with a single LED for backlight. Very low current draw.
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aviator37
Nice job
I find it interesting that you have 3 sets of batteries... most coaches have only 2... (chassis and house).
What is the reason for, or advantage of, 3?
Wondering
Mel
'96 Safari
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05-06-2015, 08:16 AM
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#10
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Senior Member
Join Date: Feb 2010
Posts: 4,654
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We have 3, starting, coach and genny-levelers.
When we added the battery minders for them we installed conduits for the ac and pulled small wires for something like this.
A spare time project to build a panel.
The others will be used on assorted new ideas...
The op units sure look nice and are likely far better ones but our needs different and the space where the panel will go is where the cable/antenna switch once was.
__________________
Tony & Lori
1989 Country Coach Savannah SE
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05-06-2015, 08:44 AM
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#11
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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We boondock frequently, sometimes just a rest area on the freeway. My wife likes the Today show in the mornings with her coffee. I designed the solar system to be independent of the other coach battery systems to avoid causing trouble. The solar panel feeds it's own 100 amp hour battery, which feeds it's own inverter. This feeds TV's mostly, but can work for anything. I broke the 120VAC plugs in half by removing the tabs. The top plug is shore/generator, and the bottom plug is solar. Just plug into what you want.
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05-06-2015, 10:46 AM
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#12
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by aviator37
We boondock frequently, sometimes just a rest area on the freeway. My wife likes the Today show in the mornings with her coffee. I designed the solar system to be independent of the other coach battery systems to avoid causing trouble. The solar panel feeds it's own 100 amp hour battery, which feeds it's own inverter. This feeds TV's mostly, but can work for anything. I broke the 120VAC plugs in half by removing the tabs. The top plug is shore/generator, and the bottom plug is solar. Just plug into what you want.
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aviator37
Thanks
We do that with only 2 sets of batteries...(have for 15 years).
Mel
'96 Safari, 140k miles
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05-06-2015, 11:21 AM
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#13
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Mar 2013
Posts: 181
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You can certainly do it with existing batteries. When I first started experimenting with solar, I didn't want to do anything that would jeopardize the coach batteries. Building the system as an independent system seemed a logical solution.
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