Batteries for Dummy (me) - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-07-2007, 09:58 PM   #1
Senior Member
 
Lainey's Avatar
 
Trailer: 1989 Bigfoot 17 ft and 1989 Li'l Bigfoot 13 ft
Posts: 538
When I picked up the Bigfoot, Ches looked at the battery (it was dry) and recommended I go to Costco for a new one. I'd be a fool to second guess that advice, and I will be buying one tomorrow. As I was getting the trailer ready for this past weekend's trip I didn't have time to get a new battery set up before leaving, so it was this one or nothing at the time.

One of my neighbours was by checking out the new trailer. He took one look and also said "buy a batttery", but for the heck of it had me top it up and he tested it. It looked okay to him on the tester and it was charging while being plugging into shore power, he though it would be fine.

Heading out on the road I switched the fridge from propane to 12v thinking that it would be okay while driving, but once we were got to camp, the battery was all but drained with only enough power to run the lights. I turned the fridge off 12v during any stops made along the way, so it was only on 12v while being towed. Truck battery is fine.

I am wondering why the battery didn't replenish itself while hooked to the tow vehicle? Is this just because the battery is all but done? Or is there a wiring problem that I should have fixed? Or is the fridge just drawing power on 12v faster than the battery will replenish from the tow vehicle?

Thanks!
__________________

__________________
Lainey is offline   Reply With Quote
Old 08-07-2007, 10:06 PM   #2
Moderator
 
Gina D.'s Avatar
 
Name: Gina D.
Trailer: '77 Leocraft 17 & Former Burro owner and fan!
West Coast USA
Posts: 9,016
Registry
a "killed" battery.. which is usually what happens when they get dry, will charge but not hold the charge for very long.

checking to make sure your tow car is actually charging is another place to look. It may not actually be doing so, even if it's set up to be. Any # of things could be happening, from faulty tow wiring, pigtail problems, lines going to the battery...

also, if the fridge is running, the battery does not get charged very well.. essentially because you are running the fridge indirectly from your car battery and the trailer battery suffers from current draw on the fridge instead of it charging the battery.
__________________

__________________
Gina D. is online now   Reply With Quote
Old 08-08-2007, 12:07 AM   #3
Moderator
 
Frederick L. Simson's Avatar
 
Name: Frederick
Trailer: Fiber Stream
California
Posts: 8,151
Registry
Send a message via AIM to Frederick L. Simson
Unhappy

Quote:
Or is the fridge just drawing power on 12v faster than the battery will replenish from the tow vehicle?
Calling it a "charge" line is a slight misnomer. When the fridge is running, the BEST it can do will be to just keep up with the drain from the fridge.
__________________
Frederick - The Scaleman
1978 Fiber Stream 16 named "Eggstasy" & 1971 Compact Jr. named "Boomerang"
Frederick L. Simson is offline   Reply With Quote
Old 08-08-2007, 04:34 AM   #4
Senior Member
 
Name: Gerry
Trailer: Boler 13 ft / 31 ft Holiday Rambler
Maine
Posts: 1,139
Gina may be right, Check to see if your Tow vehicle is set up to charge the battery in trailer.

You can do this by unhooking the Tow vehicle wire that goes to Positive post of the camper battery then start your tow vehicle and using a tester, test this lead . it should read 14 + or - a bit. is so it is charging the camper battery while traveling.

But as Frederick said the slow charge that this battery is getting off tow vehicle alternator is just maintaining or even discharging and not charging if the fridge is drawing while driving.

Gerry the canoebuilder
__________________
Gerry is offline   Reply With Quote
Old 08-08-2007, 11:00 AM   #5
Senior Member
 
Byron Kinnaman's Avatar
 
Name: Byron
Trailer: 2006 Scamp 13' towed with a 2005 Dodge Dakota 4.7l Magnum W/full tow package (over kill)
Oregon
Posts: 6,308
Registry
Quote:
Gina may be right, Check to see if your Tow vehicle is set up to charge the battery in trailer.
You can do this by unhooking the Tow vehicle wire that goes to Positive post of the camper battery then start your tow vehicle and useing a tester, test this lead . it should read 14 + or - a bit. is so it is charging the camper battery while traveling.
But as Fredrrick said the slow charge that this battery is getting off tow vehicle alternator is just maintaining or even discharging and not charging if the fridge is drawing while driveing.
Gerry the canoebuilder
I did this and it looked good, but no charge. Better easier method maybe. Disconnect the battery either by removing the fuse near the battery or taking the wire off one of the terminals. Plug into the two and start tow. Then go into the trailer and turn on one or more of the 12 volt lights.
In my case there was a solenoid that was defective in the tow vehicle and wouldn't handle the current needed, but would show up good with a meter.
__________________
Byron & Anne enjoying the everyday Saturday thing.
Byron Kinnaman is online now   Reply With Quote
Old 08-08-2007, 11:30 AM   #6
Senior Member
 
Lainey's Avatar
 
Trailer: 1989 Bigfoot 17 ft and 1989 Li'l Bigfoot 13 ft
Posts: 538
So my shopping list is consisting of:

Deep cycle marine battery
Testing meter
Charger

Questions:

What's the difference between a 24M or 27M battery? Existing one is 24.
What would be a better charging system? I see Costco has a Solar Panel Charger that I am interested in, or am I better off going with something like the Eliminator Intelligent Charger?
Are there any certain features I should be looking for on a tester? Will something like this Digital Multimeter do the job?
__________________
Lainey is offline   Reply With Quote
Old 08-08-2007, 03:02 PM   #7
Senior Member
 
Chester Taje's Avatar
 
Name: Ches
Trailer: 1992 Kustom Koach 17 FT
British Columbia
Posts: 4,897
Hi Lainey
Remember when buying a new battery that the battery case on your unit will ,(I think )only hold a size 24 battery.The difference between batteries is that a 27 will have more amp hours of use.
__________________
Retired Underground Coal Miner.
Served in Canadian Army (1PPCLI)
Chester Taje is offline   Reply With Quote
Old 08-08-2007, 04:44 PM   #8
Senior Member
 
Lainey's Avatar
 
Trailer: 1989 Bigfoot 17 ft and 1989 Li'l Bigfoot 13 ft
Posts: 538
Okay, I will make sure the new one fits the existing battery case.

I'm taking the interior measurements of the case with me just on the off chance that the larger one will fit, but I'm not holding my breath.

Any thoughts on the charging options I'm looking at?

Thanks
__________________
Lainey is offline   Reply With Quote
Old 08-08-2007, 04:53 PM   #9
Senior Member
 
Chester Taje's Avatar
 
Name: Ches
Trailer: 1992 Kustom Koach 17 FT
British Columbia
Posts: 4,897
Look at Canadian Tire on line.Type in Battery Chargers.The first one you see is a smart battery charger.This is type you want.
__________________
Retired Underground Coal Miner.
Served in Canadian Army (1PPCLI)
Chester Taje is offline   Reply With Quote
Old 08-08-2007, 05:15 PM   #10
Senior Member
 
Lainey's Avatar
 
Trailer: 1989 Bigfoot 17 ft and 1989 Li'l Bigfoot 13 ft
Posts: 538
This is the first one I get on the list on the Canuck Tire site:Motomaster Automatic 10/2A Battery Charger Is that the one you mean? Do you know the item number of the one you are looking at if not? Thanks!
__________________
Lainey is offline   Reply With Quote
Old 08-08-2007, 05:56 PM   #11
Senior Member
 
Chester Taje's Avatar
 
Name: Ches
Trailer: 1992 Kustom Koach 17 FT
British Columbia
Posts: 4,897
Quote:
This is the first one I get on the list on the Canuck Tire site:Motomaster Automatic 10/2A Battery Charger Is that the one you mean? Do you know the item number of the one you are looking at if not? Thanks!
I am looking at same one.Maybe one of our experts here will chime in and let us both know if this is a good one.My main concern is to make sure i can leave charger on and not boil battery.
__________________
Retired Underground Coal Miner.
Served in Canadian Army (1PPCLI)
Chester Taje is offline   Reply With Quote
Old 08-08-2007, 06:13 PM   #12
Senior Member
 
Brian B-P's Avatar
 
Name: Brian
Trailer: Boler (B1700RGH) 1979
Alberta
Posts: 5,000
Quote:
This is the first one I get on the list on the Canuck Tire site:Motomaster Automatic 10/2A Battery Charger Is that the one you mean? Do you know the item number of the one you are looking at if not?
That one's automatic (doesn't just keep trying to charge forever like a "manual"), but not "smart"... I would not expect it to manage the rate of charge current very well. In the Canadian Tire line (which is generally built by Schumacher), the better chargers are have "Intelligent" in their name, such as the Eliminator Intelligent Charger (item 11-1514-6) or the Intelligent Battery Charger (item 11-1513-8, a 12/8/2 amp unit); both are really Schumacher SpeedChargers. For an RV battery, you don't need the 30 amp high-current feature of item 11-1514-6, but that one does add the desulphate/restore feature which might be useful (I have it on my Vector charger, and I've tried it but can't say if it is really effective).

WalMart is another source: around here (it varies by area) they carry the Vector line, including the one I bought.

Fast charging is generally not a desirable thing for efficiency or battery life, especially for deep-discharge (RV) batteries, so take it as slow as you have time for... ten hours to charge is better than one, and a 12 amp initial charging rate (just an example, the highest rate on my charger) will get your half-discharged group 24 or group 27 battery charged back up in that time.
__________________
1979 Boler B1700RGH, pulled by 2004 Toyota Sienna LE 2WD
Information is good. Lack of information is not so good, but misinformation is much worse. Check facts, and apply common sense liberally.
STATUS: No longer active in forum.
Brian B-P is offline   Reply With Quote
Old 08-08-2007, 06:19 PM   #13
Senior Member
 
Chester Taje's Avatar
 
Name: Ches
Trailer: 1992 Kustom Koach 17 FT
British Columbia
Posts: 4,897
Thanks Brian---Good info for Lainey and I.
__________________
Retired Underground Coal Miner.
Served in Canadian Army (1PPCLI)
Chester Taje is offline   Reply With Quote
Old 08-08-2007, 06:32 PM   #14
Senior Member
 
Brian B-P's Avatar
 
Name: Brian
Trailer: Boler (B1700RGH) 1979
Alberta
Posts: 5,000
Quote:
So my shopping list is consisting of:

Deep cycle marine battery...
"Deep cycle" - yes; but "marine" doesn't matter. Since marine and RV requirements for deep-cycle batteries are compatible, the same product is often offered for both applications, so lots of us have "marine" batteries. If they were just "deep cycle", that would be fine, too.
__________________

__________________
1979 Boler B1700RGH, pulled by 2004 Toyota Sienna LE 2WD
Information is good. Lack of information is not so good, but misinformation is much worse. Check facts, and apply common sense liberally.
STATUS: No longer active in forum.
Brian B-P is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Better Batteries Per Walthinsen Problem Solving | Owners Helping Owners 3 04-11-2008 11:03 PM
Batteries theresa p Electrical | Charging, Systems, Solar and Generators 7 09-03-2007 09:20 PM
Batteries theresa p Electrical | Charging, Systems, Solar and Generators 13 11-27-2006 01:38 PM
Batteries Legacy Posts Care and Feeding of Molded Fiberglass Trailers 16 04-03-2003 04:28 PM
Converters, Batteries etc Legacy Posts Problem Solving | Owners Helping Owners 1 12-13-2002 12:47 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:41 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.