Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-28-2008, 07:28 PM   #1
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
battery disconnect

I just could not find info on this in search. I'm looking to install a battery disconnect of some sort in my '81 moho so that my batts don't die so quickly, especially the crank one. Before I take a trip, I have to charge the batts with charger overnight.
My Vintage Corvette buddies use different types, since they don't drive their babies every day. Some have a green knob, which many dislike. Some have a metal bar or handle that they can "switch" on and off. Others have a "battery brain" that does it for them. I don't mind doing it manually since I'm already in the moho and it's convenient to open the compartment (unlike a car hood). Any suggestions as to what is used in these motorhomes? Thanks.
__________________

__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 06-28-2008, 07:32 PM   #2
Rivet Master
 
str8strm's Avatar
 
1985 34.5' Airstream 345
Tujunga , California
Join Date: Apr 2005
Posts: 1,969
Images: 6
don't use the green knob

the pot metal they make them out of is soo cheap, we had one break off while waiting to cross the border in Mexicali!! and its replacement broke on the freeway in San Luis Obispo. Both times we lost all power to the Moho because the alternator could not keep up when we tried to start the genny for AC. We were able to trace down all the draws on the battery and have not needed one for 2 years. ON our 85 we have a switch that allows us to shut off the coach/house batteries but have not needed it either because we traced the draws. The switch is in the battery drawer near the door on our coach. We just got a mini solar panel for our tow vehicle that plugs into a cigarette lighter---that might help you keep them charged while sitting.
__________________

__________________
Ron and Debbie Lawrence
1985 345 Motorhome...... delightfully tacky......yet unrefined
AIR 7992
str8strm is offline   Reply With Quote
Old 06-28-2008, 08:29 PM   #3
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
I saw a picture of the lever type somewhere...I think I may want to use one of those.
The reason I need one is not because my batts draw current so fast, it's because I don't take the Airstream out much anymore because my kids are now grown and they have other interests. Sad but true. I may be selling soon, but for now, I use it occassionally for myself. Next month my family is visiting from WA and I will be picking them up in my Airstream in style!
So, since it just sits, I want to disconnect it and perhaps it doesn't have to go thru so many charges. Thanks.
__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 06-28-2008, 08:52 PM   #4
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
I found it. I think the knife (or Frankenstein) swith is what I will do. Is the green knob the one you say is pot metal?
Attached Thumbnails
Click image for larger version

Name:	knife style.jpg
Views:	67
Size:	64.3 KB
ID:	62954   Click image for larger version

Name:	green knob.jpg
Views:	64
Size:	12.0 KB
ID:	62955  

__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 06-28-2008, 09:01 PM   #5
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,352
Here is the type of disconnect switch that I prefer. Our 1984 310 motorhome has one like this mounted to the inside back of the drawer.

eBay Motors: Longacre 45761 Battery Disconnect Panel Switch IMCA (item 330246579914 end time Jun-29-08 19:57:39 PDT)

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is online now   Reply With Quote
Old 06-28-2008, 09:45 PM   #6
Rivet Master
 
richinny's Avatar
 
2011 34' Classic
Westchester Cty.NY , / Miami FL
Join Date: Jul 2007
Posts: 3,122
do you have a gasser or a diesel? you'll need a switch with an amps rating to match.
__________________
Ricky
2012 F150 Super Crew 5-1/2' bed Ecoboost 4x4 3.73 elec. lock diff. Propride hitch
give life. kidney & pancreas transplant 9/9/06
Ingrid-my unofficial '"World's Oldest Streamer" 1909-2008 R.I.P.
richinny is offline   Reply With Quote
Old 06-28-2008, 09:51 PM   #7
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,352
One thing that hasn't been mentioned is the disconnect switch on our motorhome ONLY disconnects the coach batteries from the coach. It does NOT disconnect the engine battery.

An engine battery disconnect is something I've been thinking about adding but just haven't had the time to do it.

Ricky is correct you want to make sure the switch is rated for the load you're pushing through it. For a coach battery disconnect the one I posted is more than adequate. For the the engine battery disconnect you need to determine your current draw when cranking the starter before selecting a switch.

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is online now   Reply With Quote
Old 06-28-2008, 10:38 PM   #8
Rivet Master
 
Excella CM's Avatar
 
1978 31' Excella 500
Venice , California
Join Date: May 2006
Posts: 1,061
These items from Cole-Hersee should do nicely. I use one of the big round ones and they also come with a key lock to lock all systems off.
Attached Images
  
__________________
"Not all who are laundering are washed" say Bill & Heidi

'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737
Excella CM is offline   Reply With Quote
Old 06-28-2008, 10:52 PM   #9
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
Oh thank you guys. I have a gasser (454). That's some good info. Indeed, I was talking about the engine battery. That's the one I always charge to get it started after several weeks of non use. I have a solar trickle charger that I bought to keep it charged, but I was told that at night it drains the battery again since no sun. So I never used it.
Isn't the current draw when cranking the battery the same for all vehicles? It's a 12V system, yes? Just like in cars. Why does one have to find out the amp load rating. I don't know how to do that! Won't one size fit all?
__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 06-28-2008, 11:04 PM   #10
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,352
Quote:
Originally Posted by Astrodokk View Post
I have a solar trickle charger that I bought to keep it charged, but I was told that at night it drains the battery again since no sun. So I never used it.
Not true. The battery will not discharge if you leave the solar trickle charger hooked up over night. We used to use one on our motorhome until it went bad and it worked great.

Quote:
Isn't the current draw when cranking the battery the same for all vehicles? It's a 12V system, yes? Just like in cars. Why does one have to find out the amp load rating. I don't know how to do that! Won't one size fit all?
We use one similar to the one I posted on my wife's race car with no issues although its only a 1300 cc engine compared to your 454. My guess is the one I posted will work fine for a 454.

Also the one Excella CM posted would probably work nicely as well.

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is online now   Reply With Quote
Old 06-29-2008, 10:04 AM   #11
Rivet Master
 
richinny's Avatar
 
2011 34' Classic
Westchester Cty.NY , / Miami FL
Join Date: Jul 2007
Posts: 3,122
Quote:
Originally Posted by Astrodokk View Post
Isn't the current draw when cranking the battery the same for all vehicles? It's a 12V system, yes? Just like in cars. Why does one have to find out the amp load rating. I don't know how to do that! Won't one size fit all?
diesels, because of the high compression, draw more, MUCH more. those switches look ok. item descriptions online might give amp ratings.
__________________
Ricky
2012 F150 Super Crew 5-1/2' bed Ecoboost 4x4 3.73 elec. lock diff. Propride hitch
give life. kidney & pancreas transplant 9/9/06
Ingrid-my unofficial '"World's Oldest Streamer" 1909-2008 R.I.P.
richinny is offline   Reply With Quote
Old 06-29-2008, 12:11 PM   #12
Rivet Master
 
Excella CM's Avatar
 
1978 31' Excella 500
Venice , California
Join Date: May 2006
Posts: 1,061
The round black switches are 300 A continuous and 500 A intermittant (starting). They have switches up to 1200 amps. Dual battery switches allow yu to use both batteries for starting, to select a single battery, or to shut off all power. There is no momentary disconnect while switching and they are designed for marine use. They are the cat's p.j.'s
__________________
"Not all who are laundering are washed" say Bill & Heidi

'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737
Excella CM is offline   Reply With Quote
Old 06-29-2008, 10:11 PM   #13
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,352
Quote:
Originally Posted by Excella CM View Post
The round black switches are 300 A continuous and 500 A intermittant (starting). They have switches up to 1200 amps. Dual battery switches allow yu to use both batteries for starting, to select a single battery, or to shut off all power. There is no momentary disconnect while switching and they are designed for marine use. They are the cat's p.j.'s
I just realized the switch you're talking about looks a lot like the one in our 1974 20' Argosy motorhome as shown in the picture below. I have no idea if its original to the motorhome or if some previous owner installed it.

Click image for larger version

Name:	74-argosy-mh-battery-switch.JPG
Views:	68
Size:	214.0 KB
ID:	63009

You can ignore the sticker on the dash, it wash there when we bought the motorhome and we haven't had time to work on it as yet (although the sticker might be appropriate ).

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is online now   Reply With Quote
Old 07-03-2008, 07:39 PM   #14
Rivet Master
 
1973 31' Sovereign
Portland , Oregon
Join Date: May 2004
Posts: 1,245
Images: 22
Here is one that might do the trick.

Battery Disconnect

Malcolm
__________________

__________________
Only he who attempts the ridiculous can achieve the impossble.
malconium 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
Master Battery disconnect FishByFly Batteries, Univolts, Converters & Inverters 7 11-20-2007 06:53 PM
Bad Battery Disconnect? Steve & Susan Batteries, Univolts, Converters & Inverters 4 05-07-2007 04:57 PM
Car Battery Low Disconnect in '68 crair Batteries, Univolts, Converters & Inverters 3 06-13-2006 06:29 PM
Battery Disconnect Light FiveGreers Electrical - Systems, Generators, Batteries & Solar 2 04-03-2006 09:01 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.