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Old 07-04-2013, 11:44 AM   #11
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RoyBraddy's Avatar
Join Date: Sep 2011
Location: King George
Posts: 2,595
Each BRAKE MAGNET will draw around 3AMPS DC from trailer battery when the emergency brakes have been activated. That will be 6AMPS for a single axle (two wheels) or 12AMPS for dual axle (four wheels)...

Hopefully your batteries survived ok as it is very hard on the deep cycle batteries to get discharged below their 50% or around 12.0VDC levels.

I do alot of camping off the power grid and watch my batteries very close from inside the camper using this homemade three meter panel that looks at the DC VOLTS for my two battery banks as well as how much DC CURRENT is being drawn by the trailer systems. Keeps me out of trouble big time... Always got to have a PLAN B...

However after saying this my electric brakes are probably directly wired to my battery bank and I would not see current being drawn if my electric brakes were activated on this meter. I would however see my DC VOLTS dropping like a rock however hehe...

Roy Ken

Roy and Carolyn
I claim Horse Creek Country in Southern Ill - Momabear is from North Texas
We live in King George VA

"We're burning daylight" - John Wayne
2008 STARCRAFT 14RT OFF-ROAD POPUP with PD9260C and three 85AH 12VDC batteries
2010 F150 FX4 5.4 GAS with 3.73 gears - Super Cab - Towing Package - 2KW Honda EU2000i Gen
K9PHT (since 1957) 146.52Mhz
"We always have a PLAN B"
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Old 07-29-2013, 10:43 PM   #12
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Join Date: Apr 2011
Location: SE Sask.
Posts: 246
Brakes seem to work fine, either with truck application or controller application. The original el cheapo tires didn't do so well on the 6000+ km trip to Whitehorse and back, though. I will need to look for some tires of better quality. We gave that poor trailer a pretty good ride behind the old Sub!

2012 Jay Feather 197 w/pull-out
1997 GMC Sub 1500 4x4;
or 2015 Ford F150 4x4 SuperCrew EB
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Old 07-30-2013, 05:51 AM   #13
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Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
Thanks for the update....I was curious how you made out.
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Old 08-06-2013, 07:39 PM   #14
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Join Date: Jul 2013
Location: North Fort Myers, FL
Posts: 16
Bummer overnight camp

Side note: clamp on ammeters do not read DC current only AC. Any measurement you get on DC is incorrect

2012 Eagle 314BDS
2013 Dodge Ram 2500, Cummins 6.7 Turbo
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