Reply
 
Thread Tools Display Modes
Old 02-05-2016, 09:34 AM   #1
Senior Member
 
Join Date: Apr 2012
Posts: 518
Brake Controller

I have a Prodigy 2 brake controller on my vehicle for my popup........everything works great. My son in the back seat often uses a small inverter for his laptop and such. The inverter plugs into a 12v socket, it has a low voltage alarm built in. Here is my question....if I'm in stop and go traffic......applying brakes at times......the low voltage alarm on the inverter will go off. Exactly how much voltage does the brake controller use?
__________________

__________________
Trevor43 is offline   Reply With Quote
Old 02-05-2016, 09:36 AM   #2
Who Dares, Wins
 
doc73's Avatar
 
Join Date: May 2012
Location: Chester County, PA
Posts: 4,825
What are you towing with? Wonder if because the engine is at idle the alternator is not putting out enough power. When's the last time the battery was checked?

Sent from my SAMSUNG-SM-G870A using Tapatalk
__________________

__________________

Pat, Jen & Heather... Oh yeah and our trained attack trailer cat, Cinnamon-EOW 11/22/2017
2015 ChevyHD D-Max
2018 Artic Wolf 315tbh8
doc73 is online now   Reply With Quote
Old 02-05-2016, 09:39 AM   #3
Senior Member
 
Join Date: Apr 2012
Posts: 518
Battery is good all though I have not load tested it..........idle speed may not be enough output for everything involved.
__________________
Trevor43 is offline   Reply With Quote
Old 02-05-2016, 09:47 AM   #4
Who Dares, Wins
 
doc73's Avatar
 
Join Date: May 2012
Location: Chester County, PA
Posts: 4,825
That is what I meant, a load test. The battery may work "fine" at the surface but might be dead. You might not even know until that cold morning and the car does not start.

Not to assume, but my guess the inverter is just a 150 watter or something small? Cigarette plug typically cannot handle any large loads before melting occurs (usually fused at 5amps) .

Edit; did this just begin?

Sent from my SAMSUNG-SM-G870A using Tapatalk
__________________

Pat, Jen & Heather... Oh yeah and our trained attack trailer cat, Cinnamon-EOW 11/22/2017
2015 ChevyHD D-Max
2018 Artic Wolf 315tbh8
doc73 is online now   Reply With Quote
Old 02-05-2016, 09:49 AM   #5
Senior Member
 
Join Date: Apr 2012
Posts: 518
Yeah......I was thinking outlet wiring may be on the light side
__________________
Trevor43 is offline   Reply With Quote
Old 02-05-2016, 09:58 AM   #6
Senior Member
 
DAISY BOYKIN's Avatar
 
Join Date: Jun 2010
Location: SUNSHINE STATE
Posts: 1,623
Send a message via Skype™ to DAISY BOYKIN
Brake Controller

Your brake controller can at times draw up to 14-16 amps depending high you have it set. This high amp draw along with the inverter (HIGH DRAW device) And a battery that is getting age on it can trigger the alarm. The alarm is telling you the AC voltage output has dropped below safe operation voltage of AC to power the computer properly.
__________________
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
TST Truck System Technologies TM-507SE
DAYS CAMPED 2017 66 DAYS
DAISY BOYKIN is offline   Reply With Quote
Old 02-07-2016, 11:17 AM   #7
Senior Member
 
Join Date: May 2013
Posts: 333
I would assume a single axle popup?
2 axle brakes approx 5a
Inverter 150w/12v = 12.5 a
I would have the electrical system checked on tow vehicle and also the battery on the popup check !


Sent from my iPhone using Forest River Forums
__________________
mfMcFroggierPod is offline   Reply With Quote
Old 02-07-2016, 11:25 AM   #8
Site Team
 
Flybob's Avatar
 
Join Date: Oct 2014
Posts: 5,559
Sometimes the after market brake controllers are connected to the Cig lighter 12V supply simply because it is easily accessible. The brakes can draw sufficient current (>10A) to cause a voltage drop on that line to trip a low voltage alarm. If you are concerned, run a new fused #12 wire to an open position on the fuse block.
__________________

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
Flybob is offline   Reply With Quote
Old 02-07-2016, 12:17 PM   #9
Senior Member
 
Join Date: Jun 2014
Location: Just outside Durango CO
Posts: 120
You don't mention what kind of vehicle you're using so I'll assume it doesn't have a voltage gauge. It would be helpful to know if the laptop's low voltage alarm is accurate and how much of a drop you're seeing. Next time you're towing I'd suggest connecting a voltmeter to an open power/cigarette outlet and checking voltage when braking. My suspicion would be that at idle you're alternator isn't generating as much power but I'd be surprised that the battery can't maintain the voltage level for at least short periods.

As Doc73 suggested have a load test done on that battery. I believe most AutoZone stores can do this for you in a matter of minutes.
__________________
Barry, MSgt, USAF, Ret. & Rose

2017 Ford F150 w/ 3.5 EB
2014 Coachmen Viking 17FQ

Colorful Colorado
La Plata View is offline   Reply With Quote
Old 02-10-2016, 09:06 AM   #10
Senior Member
 
Join Date: Apr 2012
Posts: 518
The 600w power inverter will stop supplying 115vac to the laptop when in stop and go traffic......when it drops out the laptop will chirp as if it has been unplugged. Because this is plugged into the dc plug in the rear of the 2009 Santa Fe (for those requesting the vehicle make).....I'm sure it is a amp drop...........I also use the P2 controller with the Boost setting at 2.
__________________

__________________
Trevor43 is offline   Reply With Quote
Reply

Tags
brake control, controller, brakes

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:21 AM.