Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 05-07-2011, 08:43 AM   #1
Junior Member
Join Date: May 2011
Posts: 1
Coach Battery Drain

I have a 2010 Itasca Impulse class c motor home. The coach battery drains in just 2 weeks when not in use as well as when being used at a rv park.
Can the battery be disconnected during these times? Will this cause any problems?


John Gartrel 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 05-07-2011, 09:21 AM   #2
Senior Member
The General's Avatar
Forest River Owners Club
Freightliner Owners Club
Join Date: Sep 2007
Location: Rancho Cordova, California
Posts: 1,034
Send a message via Yahoo to The General
Hi John,

If you are saying that when pluged into a/c power, the auxilliary battery discharges then I'd have the charging system checked by dealer, and hopefully, under warranty. Check for any items that may stay on while coach is not in use; LP/smoke alarms, storage lights, radio travel on/off mode switch, storage electrical on/off switches etc.
I'm sure you have read your chasis and owner's manuals.
If all fails then you can install a blade switch on your coach battery like these Knife-Blade Switches - Wirthco Engineering, Inc.


The General is offline   Reply With Quote
Old 05-07-2011, 12:22 PM   #3
Senior Member
Join Date: May 2007
Posts: 632
Self discharge rate is 8% to 40% per month so even completely disconnected the batteries can go flat and even the partial discharge of shorter periods is not good for the batteries.

Residual loads like alarms and control boards can pull 10 to 20 watts and that will run down a typical RV battery in a week or so.

Disconnect and keeping batteries cool can help to extend storage minimizing battery life impact, but

It would be best for your batteries to apply a maintenance charger on then when they are not in use. This is a device that will not only keep a full charge on the batteries but also apply a technique to inhibit sulfation.
BryanL is offline   Reply With Quote
Old 05-07-2011, 07:06 PM   #4
Junior Member
Join Date: Dec 2010
Posts: 18
Winnebago installs a Trick-L-Start on some of there higher end Motorhomes I installed one in my 06 Itasca Cambria about 3 years and no problem since. It must be hooked up to shore power to work.
geraldnew is offline   Reply With Quote
Old 05-08-2011, 07:57 AM   #5
Senior Member
DRosedale's Avatar
Texas Boomers Club
Forest River Owners Club
Join Date: Mar 2011
Posts: 702
There should be a battery disconnect switch somewhere. Mine is located on a panel to the left of the steps as you go in the coach. Of course if the battery is draining even when you are hooked up to shore power, it sounds like your converter is not charging the battery, or the disconnect switch is on.

If the battery disconnect switch is on, then the converter can't charge the battery. Do your 12 volt lights work? My brother in law thought his converter was bad, but after we checked the circuit panel we found a breaker thrown, flipped it back on and he was good to go.

Can you hear your converter come on when hooked to shore power and a few lights are on? If not and you have checked everything else, the converter's main board may be bad.

A lot of possibilities for your problem, but I would check the easy things first.
1. Breaker
2. battery disconnect
3. fuses

One last thought if you think it might be the converter get the manufactures name and the model of your converter and call the manufactures customer service. They should be able to help you if indeed it is the converter.
2011 Coachmen Concord, Ford E450
DRosedale, BRosedale and Yorkies, Max, Molly, Harley
Pineville, LA
DRosedale is offline   Reply With Quote
Old 05-09-2011, 03:26 AM   #6
Junior Member
Join Date: Dec 2010
Posts: 18
Sorry I guess I'm wrong the Trik-L-Start only charges the Chassis Battery when hooked up to shore power.If your Coach battery is not charging it is your convertor or switch near you enterence door not turned on. Jerry
geraldnew is offline   Reply With Quote
Old 05-13-2011, 08:04 AM   #7
Senior Member
bearaboo's Avatar
Join Date: May 2011
Posts: 290
Check your converter with a voltage meter. It should be putting out a minimum of 13.2 volts for the float/trickle charge to the house battery when connected to shore power. Multistage chargers will vary the output, but not below 13.2.
Most class C 's have basic chargers. I have known many of them to fail. Myself included. I opted to upgrade when my failed to a multistage converter.
bearaboo is offline   Reply With Quote
Old 05-13-2011, 08:31 AM   #8
Senior Member
RJay's Avatar
Newmar Owners Club
Join Date: Jan 2010
Posts: 4,589
If your talking about your coach batteries, using the battery disconnect separates all DC electrical loads except the LP detector. It's possible the LP detector can drain your batteries. To disconnect the LP detector just pull the 1 amp fuse.
2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.
RJay is offline   Reply With Quote
Old 05-20-2011, 03:06 PM   #9
Senior Member
The Shadow's Avatar
Join Date: Mar 2003
Location: Southern Ontario/Palmetto FL
Posts: 1,092
John, when not in use we just turn the 2 coach (house) batteries off using the switch at the entrance door. For the chassis battery I installed a disconnect switch on the battery post ($7 at Harbor Freight) and we disconnect the chassis battery when it is in storage (over the winter we didn't fire up the engine once in Florida and the charge in April when we left after over 5 months the multimeter said 12.7V still). When you are connected to shore power the house batteries will charge but not the chassis battery.


2011 Itasca Impulse 26QP
2011 Itasca Impulse 26QP Silver, 2014 Jeep Cherokee Limited V6 Active Drive II
The Shadow is offline   Reply With Quote
Old 05-20-2011, 03:53 PM   #10
Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 4,548
In our shop, we always started with the battery first. Check the water level. Check the wires. Make sure no wires were left 0ff the post. Plug in the power cord. Move to the converter. Check the plug for 110V. Check the 12V output. It should read 13.6 volts. Next go back to the battery. Read the charge rate. It should read between 13.2 and 13.8 . It will vary according to the charge on the battery. Never disconnect the batteries while the converter or inverter is plugged in. The batteries act as a sink for the chargers.

ga traveler is online now   Reply With Quote

battery disconnect, battery drain

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
Battery Drain cef2lion Winnebago Industries Owner's Forum 22 09-21-2010 07:12 AM
House battery drain raskul Winnebago Industries Owner's Forum 11 08-12-2007 06:21 PM
Battery drain issues KayLarGo Newmar Owner's Forum 16 12-07-2006 06:28 AM
Solved my engine battery drain problem. Bo MH-General Discussions & Problems 6 09-27-2005 05:01 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:13 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.