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05-19-2019, 06:48 PM
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#1
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Junior Member
Join Date: Aug 2015
Posts: 11
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Bad Battery?
We have a V lite travel trailer. Trailer jack and slides will only work on shore power. Even when power cord hooked to truck (slides, jacks) do not work until shore power connected. Could this be bad battery (5yrs old)?
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05-19-2019, 06:57 PM
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#2
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
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It could be. Take the battery to an auto parts store and have them test it. They usually do it for free. You should also check your battery disconnect, reverse polarity fuses (30 or 40amp) and the resetable fuse on the tongue or frame near the battery. Usually the tongue jack and slides are connected directly to the battery side of the resetable fuse but yours could wired be different.
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Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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05-19-2019, 07:09 PM
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#3
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Site Team
Join Date: Oct 2014
Posts: 15,301
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If battery is bad it will drag down the aux line from the TV. 5 yrs is about the best you can expect from the batteries delivered with most RVs.
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2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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05-19-2019, 08:29 PM
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#4
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Senior Member
Join Date: Mar 2017
Posts: 2,481
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Agree with others that you should have that battery tested. Last deep cycle battery I had only lasted 3 yrs.
If it doesn't work when connected to the TV I would check to ensure you have power at the connector on your TV. Some vehicles only power the socket when the vehicle is running. If no voltage, check your fuses.
You should be able to work that jack if it's connected to the tow vehicle (and you have power from the TV).
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05-19-2019, 09:19 PM
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#5
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,855
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Have them test the cells, with a hydrometer.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.) 
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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05-20-2019, 04:47 AM
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#6
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Senior Member
Join Date: Nov 2017
Location: Dayton Ohio
Posts: 3,599
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Lead acid Batteries last months to ten years. Depends on the operator.
They should never be drained below 12.0 volts. If you do it damages them. Do it repeatedly and they hold less of a charge every time. Eventually zero.
Auto places check for free. Their goal was is to sell you a battery. However, you want the biggest most powerful true deep cycle battery you can afford. Simply more amps. Not a marine battery. I like the Costco 6 volt gc2 batteries for $93. However you need room for two. These are more abuse friendly and hold a lot of amps.
You can test them easily with a hydrometer. The tool is $10 at the auto store.
It s a good plan to have a voltmeter installed somewhere in the rv to keep an eye on the voltage. Amazon has a Bluetooth, voltmeter for less than $40. Others with shunts are really nice however they are much more expensive and are more difficult to install.
As said I am a little surprised that when plugged into the tv and the motor running you cannot move the slides. That indicates a blown fuse or other issue.
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05-20-2019, 07:22 AM
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#7
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Senior Member
Join Date: Feb 2017
Posts: 927
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Quote:
Originally Posted by tomkatb
Lead acid Batteries last months to ten years. Depends on the operator.
They should never be drained below 12.0 volts. If you do it damages them. Do it repeatedly and they hold less of a charge every time. Eventually zero.
Auto places check for free. Their goal was is to sell you a battery. However, you want the biggest most powerful true deep cycle battery you can afford. Simply more amps. Not a marine battery. I like the Costco 6 volt gc2 batteries for $93. However you need room for two. These are more abuse friendly and hold a lot of amps.
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Exactly - Don't make the mistake of buying a regular battery from an Auto Parts store... Get a true deep cycle battery.
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Gerry Z
2018 Forest River Heritage Glen 272RL
2018 Ford F150 Lariat 3.5 Ecoboost Max Trailer Package
Curt Trutrack WDH
HD Roadmaster Active Suspension
3200 Firman Generator/Inverter
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05-22-2019, 09:58 AM
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#8
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Senior Member
Join Date: Apr 2014
Posts: 281
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Sounds like battery shut off switch is off
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05-22-2019, 04:47 PM
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#9
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Senior Member
Join Date: Sep 2011
Location: Langley, BC
Posts: 903
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We had a battery that only lasted about 3 years. Took it to a battery shop and they found a shorted cell. What is the battery voltage (disconnected)? It's not impossible you have a bad connection too. If you have a WFCO converter, that could potentially be the problem. What is the voltage is it putting out?
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Gil & Deb & Dougal the Springer Spaniel
Langley, BC
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05-22-2019, 06:41 PM
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#10
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Junior Member
Join Date: Aug 2015
Posts: 11
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Bad Battery?
My battery is voltage is currently 12.62 volts so I feel like converter is working. Have not as yet had battery checked. Battery disconnect was 1st thing I checked.
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05-22-2019, 06:51 PM
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#11
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,362
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Quote:
Originally Posted by JLJones
My battery is voltage is currently 12.62 volts so I feel like converter is working. Have not as yet had battery checked. Battery disconnect was 1st thing I checked.
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If the converter is running and connected to a fully charged battery it should read more like 13.25 volts which is the normal Float Voltage for most Converters. Check converter with battery disconnected (cable off preferably) and I believe it should read 13.6 volts or more.
You need more than 13 volts to charge and or maintain a battery.
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"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change  )
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05-22-2019, 07:56 PM
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#12
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Junior Member
Join Date: Aug 2015
Posts: 11
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Bad Battery?
Thanks for the info. Sounds like my battery is weak. Will check converter output and see what I get. Thank you
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