Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Travel Trailer Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 02-10-2012, 09:04 PM   #15
Junior Member
 
Headtrustee's Avatar
 
Join Date: Jan 2012
Posts: 6
It will take more than over night to fully charge a dead deep cycle battery. Charge slowly and for a long time. May take 2 - 3 days to fully charge it.
__________________

__________________
Headtrustee is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-13-2012, 11:09 AM   #16
Member
 
DoubleJ73's Avatar
 
Join Date: Jan 2012
Posts: 30
So...battery is charged and slideout is functioning properly! Guess I just need to make sure that I recharge the battery every so often to keep it in good working condition. Thank you all for responding. This is a great site and as a newbie I am learning something new everyday!
__________________

__________________
DoubleJ73 is offline   Reply With Quote
Old 02-21-2012, 10:49 AM   #17
Member
 
Join Date: Feb 2012
Location: abc
Posts: 70
my TT says to plug in the shore line for at least 8 hours a month to keep the battery charged up. one of the things mentioned above was the battery fully charged when you disconnected it? it does make a difference if it is or not.
good luck!
__________________
papachaz57 is offline   Reply With Quote
Old 02-24-2012, 09:03 PM   #18
Senior Member
 
Shadowcatche's Avatar
 
iRV2 No Limits Club
Join Date: Nov 2010
Posts: 1,219
You need to monitor the battery! A volt meter at the very least to make sure it is fully charged Car and Deep Cycle Battery FAQ, Battery Manufacturers and Brand Names List, and
__________________
Shadowcatche is offline   Reply With Quote
Old 03-02-2012, 05:45 PM   #19
Member
 
Join Date: Apr 2011
Location: Colorado Mountains
Posts: 94
Quote:
Originally Posted by wa8yxm View Post
OTHER RV's have modern 3-stage converters, and with these ... Well first they charge the battery much faster, they can keep up with radio and other "Clean power" devices no problem... And once the battery is full.. They shut down to a "Maintenance mode" (Float charge) where basically no current flows in the battery.

The result is very long battery life.
Hopefully you or someone else knowledgeable on the subject are still monitoring this thread...

Let's say I have purchased a 3 stage charger separate from my RV where I will remove the batteries from the RV for about 4 months during the winter.

Should I be leaving the 3 stage charger powered up and connected to the battery for the entire 4 months?

Also, can I hook both batteries in parallel and use a single 3 stage charger to maintain both batteries during this 4 month duration?

Thank you.
__________________
RedRocket is offline   Reply With Quote
Old 03-02-2012, 05:59 PM   #20
Senior Member
 
GaryKD's Avatar
 
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 12,322
Hi RedRocket,
You can leave the 3 stage charger connected to the batteries. You can connect the 12 VDC batteries in parallel and use one charger to maintain both batteries.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 03-02-2012, 06:01 PM   #21
Senior Member
 
GaryKD's Avatar
 
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 12,322
Hi papachaz57,
The battery should be fully charged before disconnecting the charger. While not a death sentence if not fully charged, if one continues to do this over time the battery will not regain its' full capacity.
__________________
Gary
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 03-03-2012, 06:43 AM   #22
Senior Member
 
Shadowcatche's Avatar
 
iRV2 No Limits Club
Join Date: Nov 2010
Posts: 1,219
GaryKD You can not tie two batteries in parallel unless they are identical AH, age, manufacturer. Otherwise both batteries take on the characteristic of the weaker battery (over simplified). I have three batteries in my garage, lawn tractor, Saab Sonett I am restoring, and an AGM that is faulty but still has some value. I regularly recharge (weekly) the two lead acid and every couple of months the AGM (much lower self discharge).
To help with understanding of what a marine starting battery is
" Marine batteries are usually a "hybrid", and fall between the starting and deep-cycle batteries, though a few (Rolls-Surrette and Concorde, for example) are true deep cycle. In the hybrid, the plates may be composed of Lead sponge, but it is coarser and heavier than that used in starting batteries. It is often hard to tell what you are getting in a "marine" battery, but most are a hybrid. Starting batteries are usually rated at "CCA", or cold cranking amps, or "MCA", Marine cranking amps - the same as "CA". Any battery with the capacity shown in CA or MCA may or may not be a true deep-cycle battery. It is sometimes hard to tell, as the term deep cycle is often overused. CA and MCA ratings are at 32 degrees F, while CCA is at zero degree F. Unfortunately, the only positive way to tell with some batteries is to buy one and cut it open - not much of an option." http://www.windsun.com/Batteries/Bat...ery%20Charging
__________________
Shadowcatche is offline   Reply With Quote
Old 03-03-2012, 09:15 AM   #23
Senior Member
 
Join Date: May 2007
Posts: 632
re: "You can not tie two batteries in parallel unless they are identical AH, age, manufacturer. Otherwise both batteries take on the characteristic of the weaker battery (over simplified)" -- There are factors that need to be considered here. All lead acid batteries have nearly the same voltage versus state of charge profile and old batteries are mainly distinguished by having a higher internal impedance and less capacity. That means that mismatched lead acid batteries just put more of the work on the bigger and newer battery - not that they take on the "characteristic of the weaker" - this is why most RV's will have both the house and engine batteries connected in parallel at least while on the road with no undue consequence.

That is, connecting two of the same type and voltage lead acid battery should present no significant problems. The 'better' one will undertake a proportionate share of the work so it may age a bit faster but otherwise there will be no calamity.

As for the "true deep cycle" and "hybrid" and 'thick plates' whatnot - it is best IMHO to stick to what you can measure that is pertinent to your needs and to those batteries commonly available for RV use. The NAWS FAQ comment on having to 'cut it open' also notes that for batteries in this context, there is very little difference in construction (they all have thin plates, for instance).

As for the CCA and such measures, I see many RVers who like to use the coffee pot and microwave for breakfast in the morning. That is a CCA type concern. The best comment I have seen on this is at the site where Battery Performance Characteristics - How to specify and test a battery is- that suggests that maybe a 20% headroom might cover the distance between a 'deep cycle' and 'SLI' targeted battery. That 20% thing is the sort of variance you can get in lead acid batteries from factors such as temperature, use profile, age, and cycle to cycle variation.

Another point is that of battery storage. A smart modern charger should be no problem leaving connected for several months. It may even have a storage mode which would make it a very good option. Battery storage needs a device that will assure a full charge without overcharging and will apply a sulfation inhibiting technique. Some of the better RV converters do this. Float or trickle chargers don't.
__________________
BryanL is offline   Reply With Quote
Old 03-03-2012, 09:55 AM   #24
Member
 
Join Date: Apr 2011
Location: Colorado Mountains
Posts: 94
Quote:
Originally Posted by Shadowcatche View Post
GaryKD You can not tie two batteries in parallel unless they are identical AH, age, manufacturer. Otherwise both batteries take on the characteristic of the weaker battery (over simplified).
Thank you all for a much better understanding. GaryKD did answer what I was looking for and in my case, the two batteries to be in parallel would be identical, purchased at the same time with as close to identical manufacturing dates. But thank you for adding that extra piece of information.
__________________
RedRocket is offline   Reply With Quote
Old 06-27-2012, 06:30 PM   #25
Senior Member
 
trackman's Avatar
 
Join Date: Oct 2011
Posts: 1,136
Always have a charged battery(tested by you)before venturing off to the unknown
__________________
trackman is offline   Reply With Quote
Old 06-27-2012, 09:59 PM   #26
Senior Member
 
JohnBoyToo's Avatar


 
Monaco Owners Club
Join Date: May 2012
Location: DFW, Tex-US
Posts: 4,843
You may be experiencing what I suspect I am too...
maybe your tow vehicle is not recharging your coach battery ....

I am on a mission tomorrow to test that theory !
__________________

__________________
'11 Monaco Diplomat 43DFT RR10R pushed by a '14 Jeep Wrangler JKU. History.. 5'ers: 13 Redwood 38gk, 11 MVP Destiny, Open Range TT, popups, vans, tents...
JohnBoyToo 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
How can I avoid a dead battery in toad? USMCRET Toads and Motorhome Related Towing 13 09-05-2011 06:51 PM
Chassie battery dead luceil Winnebago Industries Owner's Forum 9 05-07-2008 04:18 PM
Resurrect - Dead Cordless Battery Oemtech iRV2.com General Discussion 5 09-17-2005 07:09 PM
Dead battery question Britej RV Systems & Appliances 37 08-25-2005 06:12 AM
Dead chassis battery after 2 days Fla2RI Workhorse and Chevrolet Chassis Motorhome Forum 14 06-27-2005 08:14 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:04 AM.


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