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02-01-2014, 10:20 AM
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#1
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Member
Name: David
Trailer: 2013 Scamp 16'
Wisconsin
Posts: 76
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How know when Scamp battery is getting low?
I have read numerous references about. Battery power and charging methods. We have always used full electric hookups. Later this month we'll head south and may camp in N P without electric. How will I know if my battery is running low? Measure voltage across the poles? What will be a low indicator -1 v.. -2v. ??
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02-01-2014, 11:44 AM
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#2
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Senior Member
Name: Sergey
Trailer: 2014 Scamp 16 layout 4, 2018 Winnebago Revel 4x4
SW Florida
Posts: 850
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Normal battery voltage is 12-13v. Voltage of discharged battery falls to 10v and below.
__________________
Sergey
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02-01-2014, 12:03 PM
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#3
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Senior Member
Name: Russ
Trailer: Scamp 16' side dinette, Airstream Safari 19'
California
Posts: 588
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David,
You can buy a simple tester that reads battery voltage that plugs into cigarette lighter outlet. Or if you have a stand alone meter you could measure voltage at the battery.
Fully charged you would read 12.7+ volts, and down around 50% discharged 12.2v.
It is best for battery health to stay above 50% state of charge.
If you do have to discharge lower, say 20%, you want to re-charge as soon as possible to avoid damaging the battery.
Russ
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02-01-2014, 12:17 PM
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#4
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Member
Name: Tim
Trailer: Escape
Rhode Island
Posts: 51
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I suggest you read http://manmrk.net/tutorials/RV/phred/battery.html
If you have a 12 volt outlet in your Scamp you can buy an inexpensive digital voltmeter that just plugs in. It will give you a rough idea of your battery status.
The working range will be from about 12.6 down to about 12.3 volts.
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02-01-2014, 01:58 PM
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#5
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Senior Member
Trailer: Scamp 16 ft Side Dinette
Posts: 253
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Tester
__________________
Ken
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02-01-2014, 04:34 PM
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#6
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Senior Member
Trailer: Class A Motorhome
Posts: 7,912
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Not mentioned is that draining your battery below 12.2 volts will also significantly shorten the life of your battery.
You didn't mention how old your battery is and/or how you will be charging it both when pluigged in as well as when under way.
If you are using the original, pre about 2012 Scamp converter/charger you can get almost anything from undercharged to boiled. That said, also check the battery voltage when you are plugged in and let us know that number as well. As a hint, if it's not at least 13.2 volts when charging, you may never get a full charge.
Don't forget to check your water level add distilled water if low, then charge again.
Bottom line, Batteries are a very fickle item
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02-01-2014, 04:52 PM
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#7
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Senior Member
Name: Clif
Trailer: 08 Weiscraft Little Joe 14 Subaru Outback 2.5i CVT
Louisiana
Posts: 754
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Try this site. The 12volt Side of Life (Part 1)
Also has a battery condition chart you can download and print. I keep a laminated copy next to my battery meter.
Clif
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02-01-2014, 05:11 PM
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#8
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Senior Member
Trailer: Scamp 16 ft Side Dinette
Posts: 253
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I keep this in my phone
__________________
Ken
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02-01-2014, 08:23 PM
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#9
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Member
Name: David
Trailer: 2013 Scamp 16'
Wisconsin
Posts: 76
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Thanks for the good posts. FYI, My Scamp is 2013, 16'. 24EV deep cycle silver alloy battery. I've charged it with my tow alternator and from the AC when connected. While sitting under covers this Wisconsin winter, I removed the battery to my cool basement. The cells appeared at good levels of water. I put my son's BMW charger on the battery today. I do not yet own a voltmeter that measures tents of a volt. My multipurpose analogue meter showed just under 12 v this morning (under may be a calibration issue.) the charger was putting out 13-15 v when charging. I disconnected it after three hours. After disconnecting the battery showed 13v, and now 3 hours later it shows 12.2- 12.4v(?). I'll check it again tomorrow.
For the future, I will see about wiring a 12v outlet near the power panel and acquire one of the meters some of you recommend.
I appreciate your guidance.
David
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02-01-2014, 08:31 PM
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#10
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Senior Member
Name: Brian
Trailer: 2015 Scamp 13 Front Washroom, Van Camper
New Brunswick
Posts: 372
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Another caution.. Don't leave the battery on your concrete basements floor
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02-01-2014, 10:13 PM
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#11
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Senior Member
Name: David
Trailer: Former 13’Scamp, now Snoozy
Arizona
Posts: 2,316
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Quote:
Originally Posted by kdhanso
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I have that very same chart that I printed out and taped it to the inside of a door next to the plug-in volt meter.
Dave & Paula
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02-02-2014, 08:50 AM
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#12
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Senior Member
Trailer: Beachcomber TM15
Posts: 174
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Get yourself a battery dicharge indicator (BDI)
Here's a link to what you're looking for.
Curtis Instruments | Battery Discharge Indicators and Combination Gauges
If you contact your local forklift dealers parts department they will be able to help you out with the BDI and how to wire it into your camper battery circuit.
Rick.
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02-02-2014, 09:05 AM
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#13
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Senior Member
Trailer: Beachcomber TM15
Posts: 174
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When charging a battery......
Quote:
Originally Posted by Dsironi
Thanks for the good posts. FYI, My Scamp is 2013, 16'. 24EV deep cycle silver alloy battery. I've charged it with my tow alternator and from the AC when connected. While sitting under covers this Wisconsin winter, I removed the battery to my cool basement. The cells appeared at good levels of water. I put my son's BMW charger on the battery today. I do not yet own a voltmeter that measures tents of a volt. My multipurpose analogue meter showed just under 12 v this morning (under may be a calibration issue.) the charger was putting out 13-15 v when charging. I disconnected it after three hours. After disconnecting the battery showed 13v, and now 3 hours later it shows 12.2- 12.4v(?). I'll check it again tomorrow.
For the future, I will see about wiring a 12v outlet near the power panel and acquire one of the meters some of you recommend.
I appreciate your guidance.
David
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A battery must be fully charged in order for it to gas and mix the electrolyte (charging will take 6 or more hours depending on the battery capacity and current rate of charge) this must must be done in a well ventilated area because the by product of charging a battery is hydrogen gas emissions( very explosive) so do not smoke or have any spark or flame or ignition source around the charging battery. A properly rated deep cycle charger with an automatic shut off should be used, also someone mentioned about not leaving the battery on the concrete floor, this is great advice because if you leave the battery on the concrete floor it will go to ground and discharge over time to the point of no return.
Rick.
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02-02-2014, 09:14 AM
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#14
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Senior Member
Name: Carl
Trailer: 2015 Escape 5.0TA
Florida
Posts: 1,689
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Any battery left over time will discharge.
__________________
What a long strange trip it’s been!
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02-02-2014, 09:24 AM
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#15
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Senior Member
Trailer: Beachcomber TM15
Posts: 174
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Yes that is true
Quote:
Originally Posted by CPW
Any battery left over time will discharge.
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However a properly maintained battery can last many years.
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02-02-2014, 09:43 AM
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#16
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Senior Member
Name: Carl
Trailer: 2015 Escape 5.0TA
Florida
Posts: 1,689
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Quote:
Originally Posted by Rick n
However a properly maintained battery can last many years.
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Yes, it is true that proper maintenance will enhance battery life. Chargers with a desulfation ability help, as premature battery death often results from sulfur build-up in the cells. But storing one on a concrete floor will have no adverse effect on the battery. Today's batteries are made with a non porous hard plastic shell rather than a hard rubber based case. Many years ago concrete may have been a no-no, but no longer true, now an urban myth.
__________________
What a long strange trip it’s been!
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02-02-2014, 10:22 AM
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#17
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Senior Member
Trailer: Escape 17 ft
Posts: 8,317
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02-02-2014, 10:51 AM
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#18
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Senior Member
Name: Brian
Trailer: 2015 Scamp 13 Front Washroom, Van Camper
New Brunswick
Posts: 372
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Interesting.. Tks
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02-02-2014, 11:09 AM
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#19
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Senior Member
Trailer: Beachcomber TM15
Posts: 174
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Sounds sound.....
Quote:
Originally Posted by CPW
Yes, it is true that proper maintenance will enhance battery life. Chargers with a desulfation ability help, as premature battery death often results from sulfur build-up in the cells. But storing one on a concrete floor will have no adverse effect on the battery. Today's batteries are made with a non porous hard plastic shell rather than a hard rubber based case. Many years ago concrete may have been a no-no, but no longer true, now an urban myth.
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If stored in a garage in a colder northern climate I would still avoid the concrete floor and opt for a non conductive well ventilated shelf because the potential for freezing the battery would be greater in my opinion.
Rick.
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02-02-2014, 07:17 PM
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#20
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Senior Member
Name: Mike
Trailer: 2012 Escape 19
Oklahoma
Posts: 6,018
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Quote:
Originally Posted by kdhanso
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Never saw these before. Had to order one! I do have a 12v socket in my trailer.
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