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Old 11-16-2015, 09:28 AM   #1
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Slide Out and Batteries

Recently I was informed that my slide motor needs replacement. The one of concern is a 28/1 Power Gear unit. It controls my larger slide. Also recently I have been unable to start my generator. My first thought with the gen was that my house batteries may be bad. One of them has a bulge in the case on top near the positive terminal. In my case, and I will assume all are the same, the slides will not operate unless the house batteries are connected. The batteries seem to be at about 6 volts, which would seem to be correct, but they still will not crank the gen. What tests can I perform to determine if they are bad/good and are they a controlling factor with the speed in which a slide goes in and out?

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Old 11-16-2015, 09:40 AM   #2
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Take picture of connections . . . Remove them . . . Take to auto parts store and have them load tested.
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Old 11-16-2015, 09:49 AM   #3
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Two 6 volt batteries , wired in series to power your 12 volt loads ( lights , slide motor , gen set starter.) if in good condition and full charged , should test at 12.5 > 12.7 volts, or approx 6.3 volts each battery. Anything under 6.2 volts at the battery posts, after being charged, is an indication of a bad battery.

More info at.

The 12volt Side of Life (Part 1)
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Old 11-16-2015, 09:52 AM   #4
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Are you sure which batteries operate the slides, or gen.? On our Fleetwood unit the house batteries start the gen. The chassis/ engine battery operate the slides. The dealer/tech stated to always start the engine while operating the slides as the slide motors will burn out with low voltage.
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Old 11-16-2015, 01:38 PM   #5
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I disconnected the house batteries (two 6 volt) and the slide would not move at all. Can the batteries be charged as a 12 volt or must they be charged as 6 volt batteries separately?
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Old 11-16-2015, 02:03 PM   #6
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I disconnected the house batteries (two 6 volt) and the slide would not move at all. Can the batteries be charged as a 12 volt or must they be charged as 6 volt batteries separately?

Two 6 volt batteries (in series) are normally charged by your 12v converter. Check you batteries along with the output of your converter.
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Old 11-16-2015, 04:05 PM   #7
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I disconnected the house batteries (two 6 volt) and the slide would not move at all. Can the batteries be charged as a 12 volt or must they be charged as 6 volt batteries separately?
Yes, those two six v batteries with the positive of one connected to the neg of the other just make one large 12 v battery. Your converter and your engine alt both make 12 v for charging.
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Old 11-16-2015, 06:21 PM   #8
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You can't test the condition of a battery with just a voltmeter. It has to have a load test done.
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Old 11-16-2015, 07:13 PM   #9
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You can't test the condition of a battery with just a voltmeter. It has to have a load test done.
Next on my list of things to do !

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Old 11-16-2015, 07:15 PM   #10
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Two 6 volt batteries (in series) are normally charged by your 12v converter. Check you batteries along with the output of your converter.
How does one check converter output?
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Old 11-16-2015, 08:14 PM   #11
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Bulging battery case is a bad sign. Everyone I have ever dealt with was bad. Sounds like you have a bad cell.
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Old 11-16-2015, 09:07 PM   #12
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This would load test 12 volt batteries I am sure they make a 6 volt model

Ironton Battery Load Tester 125 Amps | Automotive Diagnostics| Northern Tool + Equipment
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Old 11-16-2015, 10:09 PM   #13
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This would load test 12 volt batteries I am sure they make a 6 volt model

Ironton Battery Load Tester 125 Amps | Automotive Diagnostics| Northern Tool + Equipment
Here is one that works for 6 and 12V: ATD-5488 ATD-5488 100 Amp Battery Load Tester - tooldesk.com and is about the same price.
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