Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 08-24-2018, 02:20 AM   #1
Member
 
Brand: Thor Motor Coach
State: Georgia
Posts: 92
THOR #11774
When not in use ... charge batteries or not?

<Thor Hurricane 29M>

Have had our rig for about two months and have a charging question.

We use our rig about one weekend a month (not including periodic longer trips).

I have installed a full kill switch on the battery (but not using it) and have been keeping the rig plugged into a 20amp power plug continuously.

Question is, should I keep it plugged in when not in use (to keep the batteries topped up) or keep it unplugged and use the kill switch on the battery until the next trip (and only plug in if a charge is needed)

It's certainly a convenience to have lights and basic power when doing a project or to keep a fridge cold but want the best decision for longer battery life.

Thanks for your input.

__________________
dave.irwin.59@gmail.com is offline   Reply With Quote
Old 08-24-2018, 03:57 AM   #2
Member
 
Brand: Thor Motor Coach
Model: 2018 Challenger 37 YT
State: Kentucky
Posts: 98
THOR #8995
Batteries

A thousand yeses, keep it plugged in. Battery life depends on keeping them charged. I also keep refrigerator running all the time. Once we decide to go somewhere, we can be loaded with everything on the road in 60 to 90 minutes. Have fun.

Second thought....plugged in does not keep a motor coach engine start battery charged so a battery maintainer will keep it charged if the RV is not used often. The Battery Tender Plus seems to be the best on the market.
__________________
Enjoy the winding road ahead and forget sweating the small stuff. That road is already too short and will end way to soon......
ACEroad is offline   Reply With Quote
Old 08-24-2018, 04:10 AM   #3
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 1,985
THOR #11781
I have learned to keep my coach plugged in almost all the time. I check my batteries regularly to keep them wet and when not travelling take it for a spin to exercise the chassis.
__________________
Lt Keefer
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings
Lt Keefer is offline   Reply With Quote
Old 08-24-2018, 10:58 AM   #4
Axis/Vegas Enthusiast
 
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,834
THOR #1150
Quote:
Originally Posted by ACEroad View Post
...

Second thought....plugged in does not keep a motor coach engine start battery charged so a battery maintainer will keep it charged if the RV is not used often. The Battery Tender Plus seems to be the best on the market.
It should. If your chassis battery isn't charging when plugged in something is wrong with your RV. (The only Thor's that aren't supposed to charge the chassis battery when plugged in are ones on the Sprinter chassis as MB is a little finicky about that).
__________________
2022 Thor Axis 24.4
2021 Mach-E
blog - https://spareelectrons.wordpress.com/
JamieGeek is offline   Reply With Quote
Old 08-24-2018, 11:45 AM   #5
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,099
THOR #8860
Mine isn't plugged-in continuously; but it DOES get a drink from the outlet about once a Month...
As ACEroad mentioned: this probably doesn't protect your chassis batter.
Give that one some time on a Battery Tender.
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
Bob Denman is offline   Reply With Quote
Old 08-24-2018, 11:50 AM   #6
Senior Member
 
Oneilkeys's Avatar
 
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
If everything is working properly, leaving your coach plugged in should be no problem. But that’s a big “IF” in the Axis and Ace. The converter/charger that Thor installs is not reliable. If you get a good one, it seems to work. If you get a bad one, it doesn’t. I have had two “bad” ones in my Vegas and Axis and have replaced one. It is easy to check. Run the batteries down below 11.6v. Then plug in the coach and read the voltage. It should read around 14v, give or take a tenth. It is on high charge. After a day, it should read around 13.5V (normal Charge. After the coach has been plugged in for a few days, check the voltage on the batteries again - they should read around 13.1V (to keep the batteries topped off). If the charger does not go down to 13.1, you have a bad one and leaving it plugged in continuously could boil or dry out your batteries and shorten their life or even kill them. Also Your Ace should charge both sets of batteries (coach and chassis) on generator, shore power or engine. If not you have a problem with your BCC ( battery control center) or BIRD/Trombetta, whichever you have.
__________________
Oneilkeys is offline   Reply With Quote
Old 08-24-2018, 12:02 PM   #7
Senior Member
 
Brand: Thor Motor Coach
Model: 29h outlaw
State: New Jersey
Posts: 465
THOR #5248
Jamie,
Not all class c's have a bi directional relay Most e450 have a timed delay isolation relay that only operates when engine runs.
It is easy to tell just by looking under the hood .

Draw on the chassis battery should be no different than your personal car. Do you put a maintainer on your car when parked on vacation?

My rig is parked from November to April, store switch on, inverter off. Except for a monthly start up and short ride around the block (weather permitting) .
Coach batteries always show 12+ and rig starts with no problems.
__________________
Trkyte@msn.com is offline   Reply With Quote
Old 08-24-2018, 01:50 PM   #8
Axis/Vegas Enthusiast
 
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,834
THOR #1150
Quote:
Originally Posted by Trkyte@msn.com View Post
Jamie,
Not all class c's have a bi directional relay Most e450 have a timed delay isolation relay that only operates when engine runs.
It is easy to tell just by looking under the hood .

Draw on the chassis battery should be no different than your personal car. Do you put a maintainer on your car when parked on vacation?

My rig is parked from November to April, store switch on, inverter off. Except for a monthly start up and short ride around the block (weather permitting) .
Coach batteries always show 12+ and rig starts with no problems.
My Axis doesn't have a BIRD and it still charges the chassis battery when plugged in (its old enough to have the RV Custom Products board).
__________________
2022 Thor Axis 24.4
2021 Mach-E
blog - https://spareelectrons.wordpress.com/
JamieGeek is offline   Reply With Quote
Old 08-24-2018, 02:18 PM   #9
Member
 
Brand: Still Looking
State: Michigan
Posts: 87
THOR #3954
FYI, lead acid batteries discharge over time, even when not connected to anything.

In a discharged state the plates become sulfated and the specific gravity of the electrolyte may be permanently decreased. The battery will then not hold a full charge.

I keep a trickle charger on all my vehicles that don’t get run regularly.
__________________
Mel556180 is offline   Reply With Quote
Old 08-24-2018, 06:12 PM   #10
Junior Member
 
Brand: Thor Motor Coach
State: California
Posts: 12
THOR #10887
IMHO and that of the Service Manager at my Dealers. He plugs his in for about 4 days, then unplugs it. Not sure if that is good or bad, but for the last few months it has served me well. I have a phone reminder to plug her in on Thursday and unplug on Monday. (Old timers ya know!)
__________________
J Hansen
Hi Desert, SoCal
2018 Four Winds 22E
14 yo Chihuahua
8 yo Hound mix
Lovemylife is offline   Reply With Quote
Old 08-24-2018, 06:40 PM   #11
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,099
THOR #8860
That's just about what I do!
I'd say that "Great minds think alike."; only I'd never want to insult you like that!
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
Bob Denman is offline   Reply With Quote
Old 08-24-2018, 08:06 PM   #12
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Freedom Elite 28H
State: Florida
Posts: 200
THOR #1929
I have 30 amp service hooked up to mine at home. I keep the air conditioner set fo 85 degrees. That way it keeps all the extreme heat and humidity out of the rig. I keep my battery on all the time. My house battery is 4 years old. Live in Florida
__________________
RichS is offline   Reply With Quote
Old 08-24-2018, 11:02 PM   #13
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,099
THOR #8860
Four years old?

http://www.thorforums.com/forums/att...1&d=1535151713
Attached Thumbnails
Click image for larger version

Name:	Gunny 02.jpg
Views:	149
Size:	38.2 KB
ID:	12421  
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
Bob Denman is offline   Reply With Quote
Old 08-25-2018, 01:10 AM   #14
Junior Member
 
Brand: Thor Motor Coach
State: California
Posts: 12
THOR #10887
Quote:
Originally Posted by Bob Denman View Post
That's just about what I do!
I'd say that "Great minds think alike."; only I'd never want to insult you like that!
I would be proud to be in a group you belong to..if you were talking about me. :-)
__________________
J Hansen
Hi Desert, SoCal
2018 Four Winds 22E
14 yo Chihuahua
8 yo Hound mix
Lovemylife is offline   Reply With Quote
Old 05-26-2020, 05:38 PM   #15
Cpd
Senior Member
 
Brand: Thor Motor Coach
State: New Hampshire
Posts: 156
THOR #14097
Hi Bob
Hope you're "on" as you've help us a few times before.

Do you know how long the engine battery should last ?

We have a 2018 class c freedom elite. Just had to get a jump start from a good samaritan.

Thank!
__________________
Cpd is offline   Reply With Quote
Old 05-26-2020, 05:54 PM   #16
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,099
THOR #8860
I was always under the impression that the chassis battery should last as long as one would in your car...
Provided that they are kept charged...
(My Sprinter doesn't charge the chassis battery when hooked to shore power. )
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
Bob Denman is offline   Reply With Quote
Old 05-26-2020, 06:19 PM   #17
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 9,811
THOR #7035
Quote:
Originally Posted by Cpd View Post
Hi Bob
Hope you're "on" as you've help us a few times before.

Do you know how long the engine battery should last ?

We have a 2018 class c freedom elite. Just had to get a jump start from a good samaritan.

Thank!
Anything past 2 years on an OEM battery is gravy.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 05-26-2020, 09:44 PM   #18
Senior Member
 
Oneilkeys's Avatar
 
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
I bought my Axis in Feb 2016 and replaced the engine battery in August 2019. How long depends so much on how you use it and how you take care if it. Engine batteries will not take deep discharges very many times before they are toast. So, depending on your parasitic loads, if you leave your rig not plugged in and let the battery run down below 11.8 v or so, multiple times, it will not last long. The same if you do not keep the water topped off. And if your converter/charger does not go into “float” mode and boils you batteries. There are lots of ways to “kill” batteries. Like everything else in an RV, maintenance is critical.
__________________
Oneilkeys is offline   Reply With Quote
Old 05-26-2020, 11:36 PM   #19
Cpd
Senior Member
 
Brand: Thor Motor Coach
State: New Hampshire
Posts: 156
THOR #14097
We found that out the hard way today....now have a new one. The guy at the store told us the batteries they put in the rigs are usually crap..
Thanks for the reply!
__________________
Cpd is offline   Reply With Quote
Old 05-26-2020, 11:38 PM   #20
Cpd
Senior Member
 
Brand: Thor Motor Coach
State: New Hampshire
Posts: 156
THOR #14097
Quote:
Originally Posted by Bob Denman View Post
I was always under the impression that the chassis battery should last as long as one would in your car...
Provided that they are kept charged...
(My Sprinter doesn't charge the chassis battery when hooked to shore power. )
Thanks Bob! Had to get a new one.
__________________
Cpd is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 08:55 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2