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Open Roads Forum  >  Tech Issues

 > Dead battery so quickly?

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time2roll

Southern California

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Posted: 07/08/19 09:26pm Link  |  Quote  |  Print  |  Notify Moderator

Need a charge asap. Anything is better than letting it sit stone dead. It is sulfating and loosing capacity.


2001 F150 SuperCrew
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las peñas, michoacan, mexico

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Posted: 07/08/19 11:15pm Link  |  Quote  |  Print  |  Notify Moderator

A 3-amp draw in 24-hours will Dracula an RV battery. You didn't mention a brand name of the battery so I can only assume it's not major league. Whenever I replace a battery out comes the multimeter of a 25 watt 12-volt lamp connected in series with the chassis negative lead. Whenever I buy a battery I cherry-pick one with the highest voltage. Not infallible but better than eeney meeny miney mo.

enblethen

Moses Lake, WA

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Posted: 07/09/19 06:20am Link  |  Quote  |  Print  |  Notify Moderator

Doubt that it is a battery issue.
I would be looking more at something like a bad diode in the system or some 12 volt item failing.
Locate your 12 volt DC power distribution panel.
With a fully charged battery or plugged into shore power, pull each of the fuses one at a time. Look closely for an arc. plug fuse back in and watch again for an arc. Arc would indicate a load.
Do you have a 12 volt function on your refer? If you do switch it to propane.
What is make and model of the converter? Has it ever been changed out?


Bud
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wa8yxm

Wherever I happen to park

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Posted: 07/09/19 06:41am Link  |  Quote  |  Print  |  Notify Moderator

FLorcesent lights in RV's are typically 8 watts by 2 bulbs and inverter driven (The 12 volt ballast is really an inverter) so you are sucking about 1.5 amps

Group 24 batteries hold about 75 amphours max (at the 20 hour rate) and you can safely use about 20-25% (Figure 14-20 amp hours)

12 hours times 1.5 amps is 18 amp hours

Add in the assorted parasitic draws (Propane detector and control boards for fridge water heater and A/C) and you are now dead battery time.

Recommended solution.. Upgrade IF YOU HAVE THE ROOM to two GC-2 batteries in series.. (These are six volt when on the shelf so to make a 12 volt battery you need to wire them in series) 220 amp horus 110 usable.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


RJsfishin

Winston Or.

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Posted: 07/09/19 07:45am Link  |  Quote  |  Print  |  Notify Moderator

The batree was 1/2 dead when you bought it,.....just believe it.

A dealer's definition of charged,is , fill it w electrolyte, maybe charge it for 20 minutes (maybe!) Tnd there you have your charged 1/2 dead batree.
For full charged it would need an overnite charge of about 8 R's !!


Rich

'01 31' Rexall Vision, Generac 5.5k, 1000 watt Honda, PD 9245 conv, 300 watts Solar, 150 watt inv, 2 Cos 6v batts, ammeters, led voltmeters all over the place, KD/sat, 2 Oly Cat heaters w/ ox, and towing a 2012 Liberty, Lowe bass boat, or a Kawi Mule.


bighatnohorse

Gig Harbor - Cave Creek

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Posted: 07/09/19 07:48am Link  |  Quote  |  Print  |  Notify Moderator

A battery hydrometer tester is in order (they're cheap) and it will quickly tell you if you have a bad battery.

Do that first.
If the battery is good, then apply a full charge - make sure to allow plenty of time to reach a full charge.
Then start testing.


2014 Lance 1181
'15 F350 6.7 diesel dually long bed
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“Travel is fatal to prejudice, bigotry, and narrow-mindedness. . ." -Mark Twain


SidecarFlip

SE Michigan

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Posted: 07/09/19 11:25am Link  |  Quote  |  Print  |  Notify Moderator

Nothing much to see here except an end user with no tools to check the state of charge.


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las peñas, michoacan, mexico

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Posted: 07/09/19 02:34pm Link  |  Quote  |  Print  |  Notify Moderator

This stuff always reminds me of having a Medical Exam via telephone.

"How do you feel?"

"Unh so-so"

"Any fever?"

"No thermometer"

"Nausea? Vomiting?"

"Haven't eaten in three days"

The word frustrating does not quite describe it. Take the battery to a parts store and have them check it.

ppine

Northern Nevada

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Posted: 07/09/19 03:52pm Link  |  Quote  |  Print  |  Notify Moderator

Flourscent lights use more amps than you think. Switch over to LEDs. Try two batteries, and come up with a system to recharge them every day as in a generator and/or solar panels.

mnoeltne

Grantsville, UT

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Posted: 07/09/19 04:04pm Link  |  Quote  |  Print  |  Notify Moderator

As said above, charge it up. Use a hydrometer to check the condition.

Put an ammeter on it to check that the light is REALLY the only draw. There may be something that is supposed to be turned off,but is really turned on. Or the light may be going bad and drawing way more power than it should.


Mark & Joyce Noeltner
2005 Fleetwood Fiesta 26Y
2001 Jeep Cherokee Sport

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