Go Back   Thor Forums > Thor Tech Forums > Modifications and Updates
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 06-27-2018, 07:49 PM   #1
Junior Member
 
Brand: Thor Motor Coach
State: Texas
Posts: 2
THOR #8133
Four Batteries?

Howdy!


I have a 2017 Thor Four Winds 31L that I bought used. The brochure states that it comes with a tray for 4 house batteries, but mine only has 2. I am thinking about going with solar and 4 batteries, but I don't see how or where they would fit. Does anyone else have a 4-battery setup that can help me out?


Thanks!
Mike

AA5XF
__________________

__________________
bushmg is offline   Reply With Quote
Old 06-27-2018, 08:45 PM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Quantum WS31
State: Washington
Posts: 866
THOR #7205
I have a Quantum WS31 (same as a 31W). It had two batteries, but has a tray that fits four. The other two tuck up under & behind the step. I would measure the height clearance carefully. If you get the idea to switch to 4-6 volt batteries I hope you are good at fabricating! I installed 4 in mine, not for the faint of heart.
__________________

__________________
Pat & Becky & now Katie
Wenatchee, WA
99dart is offline   Reply With Quote
Old 06-27-2018, 10:07 PM   #3
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 11,170
THOR #8860
If you've got the room, the skills, and the inclination: please be sure to take lots of pictures for us!
Good luck!
__________________
Good Sam Member 843599689
FMCA Member F473304

Current coach: Tiffin Wayfarer 24 BW
Former coach: Thor Outlaw 29-H
Bob Denman is offline   Reply With Quote
Old 06-27-2018, 10:42 PM   #4
Junior Member
 
Brand: Thor Motor Coach
State: Texas
Posts: 2
THOR #8133
Thank you 99dart. My two 12-volt batteries fit in the tray under and behind the step, and BTW, it is a PAIN to get them out and replace them! You have to unscrew and remove the hinged step in order to get the clearance to lift them out. Anyway, where would the other 2 batteries go? I guess I could use the nearest storage compartment, but it would have to be reinforced. Any thoughts?


Thanks!
__________________
bushmg is offline   Reply With Quote
Old 06-27-2018, 11:43 PM   #5
Senior Member
 
jpmihalk's Avatar
 
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
Our Hurricane had a battery compartment with a tray that holds 4 batteries, 3 side by side and a fourth longways behind and next to the buss. We also installed solar to help keep the batteries charged when boondocking/tailgating. Our batteries are AGMs (not traditional sealed lead acid) which can be mounted on their sides... just food for thought.
__________________
John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
jpmihalk is offline   Reply With Quote
Old 06-28-2018, 06:23 AM   #6
Member
 
Brand: Thor Motor Coach
Model: 31L Chateau
State: Missouri
Posts: 92
THOR #4243
I also have the 31L and have 2 12V batteries under the step, tight fit. I believe if you want 4 batteries you have to go with 6V bateeries because there is no way 4 12v batteries will fit in the tray.
__________________
kwplot34 is offline   Reply With Quote
Old 06-28-2018, 12:12 PM   #7
Senior Member
 
Brand: Thor Motor Coach
State: Maryland
Posts: 230
THOR #5837
I have a 31E and looking from the top you see the 2 batteries and it doesn't look as if there is room for more. But if you look underneath, the battery box extends under the coach so you can fit 2 more batteries inboard. Once installed it would be nearly impossible to access those additional 2 batteries for maintenance, so you probably want to use AGM or some other zero-maintenance batteries.
__________________
jabrabu is offline   Reply With Quote
Old 07-01-2018, 10:45 AM   #8
Senior Member
 
Brand: Thor Motor Coach
Model: Four Winds
State: Ontario
Posts: 247
THOR #9081
I have a 31Y model where the tray as others have stated allows for the addition of two more batteries. I added a third battery only. Bought it at Home Depot and the battery matches the two which came with the motorhome. They are Excide Nautilus 31MDC Deep Cycle Marine batteries. Adding the third battery is very challenging. I do not believe you could add a fourth battery with the amount of clearance you have. I had to add the cables to the additional battery then slide it to the back then add the original battery in and then connect the cables. Maintenance , checking of the water levels is impossible without removing the cables and one of the batteries and then sliding the additional battery to the front. Even adding an automatic watering system is next to impossible with the clearance available. When these batteries die, as others have stated, I will replace them with maintenance free AGMs.
__________________
_____________________
2018 Four Winds 31Y
Peterrrr is offline   Reply With Quote
Old 07-01-2018, 02:30 PM   #9
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Quantum WS31
State: Washington
Posts: 866
THOR #7205
As everyone else chimed in, the second pair of batteries slide back behind the first two. I installed Interstate GC2 6v with the Flow rite quick fill system. https://smile.amazon.com/dp/B001FCAX...a_rscomp_aapi1
__________________
Pat & Becky & now Katie
Wenatchee, WA
99dart is offline   Reply With Quote
Old 07-01-2018, 02:41 PM   #10
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Quantum WS31
State: Washington
Posts: 866
THOR #7205
Quote:
Originally Posted by bushmg View Post
Thank you 99dart. My two 12-volt batteries fit in the tray under and behind the step, and BTW, it is a PAIN to get them out and replace them! You have to unscrew and remove the hinged step in order to get the clearance to lift them out. Anyway, where would the other 2 batteries go? I guess I could use the nearest storage compartment, but it would have to be reinforced. Any thoughts?


Thanks!
I would look up under the motorhome to see what you have for a tray. If it appears to be able to fit 4 batteries, do some measuring, then look at battery dimensions.
This AGM from Apex appears to be about an inch shorter than the wet cells I installed. That would be a game changer had I found these earlier! https://www.apexbattery.com/universa...gel-seale.html
__________________
Pat & Becky & now Katie
Wenatchee, WA
99dart is offline   Reply With Quote
Old 07-01-2018, 02:57 PM   #11
Senior Member
 
Brand: Thor Motor Coach
Model: 2016 Quantum WS31
State: Washington
Posts: 866
THOR #7205
Quote:
Originally Posted by Bob Denman View Post
If you've got the room, the skills, and the inclination: please be sure to take lots of pictures for us!
Good luck!
Hi Bob, I didn't take a bunch of pictures there isn't much to see! LOL But, here is what it looks like before/after dropping the 4th battery in place. The last picture is a main wiring cable that was badly pinched between the battery box assembly and the frame. I used a 90 degree air grinder w/a cut off wheel to cut away the offending steel.
Attached Thumbnails
Click image for larger version

Name:	quantum1.jpg
Views:	40
Size:	198.1 KB
ID:	11098   Click image for larger version

Name:	quantum3.jpg
Views:	38
Size:	186.2 KB
ID:	11099  

Click image for larger version

Name:	quantum4.jpg
Views:	41
Size:	92.0 KB
ID:	11100  
__________________

__________________
Pat & Becky & now Katie
Wenatchee, WA
99dart 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 10:28 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
×