Read about the Great Fleets Across America
Subscribe

School Bus Fleet Magazine Forums
School Bus Fleet Magazine Forums
Home | Profile | Register | Active Topics | Members | Search | FAQ
 All Forums
 Professional Garage
 Enter Forum: Professional Garage
 batteries for new buses
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Been Deleted
New Member

USA
9 Posts

Posted - 09/19/2013 :  08:38:52 AM  Show Profile  Reply with Quote
A bus salesmen has been telling me about using group 31 batteries in series rather than 2 8D batteries for our new buses. I live in Arizona so it gets to 100 degrees in the summer and down to 0 sometimes in the winter. What are the pros a cons for using group 31s?

second.flood
Advanced Member

USA
346 Posts

Posted - 09/19/2013 :  09:16:01 AM  Show Profile  Reply with Quote
We use 3 group 31 batteries. Always have.... highs here range from 100 to -15.
Go to Top of Page

willism
Senior Member

United States
138 Posts

Posted - 09/19/2013 :  09:41:59 AM  Show Profile  Visit willism's Homepage  Reply with Quote
Same here 3 group 31's as long as we have the space for them.
Go to Top of Page

tigger2
Advanced Member

USA
281 Posts

Posted - 09/19/2013 :  10:43:53 AM  Show Profile  Reply with Quote
We here in norther Indiana use 3 group 31s 950hd, best part is no more broken or loose battery terminals.
Go to Top of Page

slippert
Advanced Member

USA
375 Posts

Posted - 09/19/2013 :  11:11:39 AM  Show Profile  Reply with Quote
We use 3, 31 series batteries in all buses..in mid to northern Michigan..rarely (do get a few)100 degrees here but get our share of below zero... I use 750 cca, and get at least 6-8 yrs life out of them...
Con: the higher the cca the tighter the plates are packed in cell...more apt to sulfate and maybe get a bad cell faster..
Pro: 31 is a lot lighter to carry than the 8D and if only one in bus( like my older buses use to be) you get 2250 cca or more out of 3-31's and I think about the highest cca I had seen is 1450 on an 8D
If your running 2-8d's you could get almost as much cca out of 3-lighter 31's than the 2 8D's you are running now.IMO

Edited by - slippert on 09/19/2013 11:13:38 AM
Go to Top of Page

Fastback
Top Member

955 Posts

Posted - 09/19/2013 :  11:24:00 AM  Show Profile  Reply with Quote
We use either 2 or 3 group 31s in all our buses. Been doing it that way for 30 years or so.

Why yes, the ORIGinal CHARGER is a Fastback
Go to Top of Page

Mechan1c
Top Member

USA
674 Posts

Posted - 09/19/2013 :  12:13:25 PM  Show Profile  Reply with Quote
We've been 3 X 31 since 2007. I had just assumed I was the last one to switch. I feel better...Way less mess in the battery box!
Go to Top of Page

Bassman
Top Member

USA
510 Posts

Posted - 09/19/2013 :  12:25:04 PM  Show Profile  Reply with Quote
Use 2 or 3 Group 31 "series" batteries but you are not going to hook them up in "series". They will be wired "parallel."
Go to Top of Page

Fastback
Top Member

955 Posts

Posted - 09/19/2013 :  1:05:59 PM  Show Profile  Reply with Quote
quote:
Originally posted by Bassman

Use 2 or 3 Group 31 "series" batteries but you are not going to hook them up in "series". They will be wired "parallel."



good catch, for a 12 volt system wire 12 volt batteries in parallel

Why yes, the ORIGinal CHARGER is a Fastback
Go to Top of Page

bluebirdvision
Top Member

USA
992 Posts

Posted - 09/19/2013 :  1:06:14 PM  Show Profile  Click to see bluebirdvision's MSN Messenger address  Reply with Quote
I had a bus at one time with 8D batteries, went to price replacement. Wow. I can't believe anybody would spec them.

Shane Kirley
New York Bus Sales Delivery Driver. (I know its not much, but its a start)


Facebook Page: Blue Bird Corporation Fans
https://www.facebook.com/home.php?sk=group_212311114614&ap=1


Go to Top of Page

eddo
Senior Member

USA
89 Posts

Posted - 09/19/2013 :  2:19:35 PM  Show Profile  Reply with Quote
I'm also in AZ, and I use group 31's. On average, I get about 3 years out of them.
Go to Top of Page

bwest
Administrator

United States
2266 Posts

Posted - 09/22/2013 :  6:38:13 PM  Show Profile  Reply with Quote
2 group 31s in Illinois (about 2/3 of the way down in the state so not as cold as Chicago). I haven't had any trouble and get, the already talked about, 6-8 yrs out of them.

Bryan
Go to Top of Page

partsman_ba
Administrator

United States
285 Posts

Posted - 09/23/2013 :  11:50:40 AM  Show Profile  Reply with Quote
We switched our buses to 1 8D from group 31's back before I started working here (7 years), and have spec'ed 2 8Ds ever since. I think the idea back in the day was to save money. I pay less than $140 for 8Ds on a contract from Batteries Plus.

Now, we have Visions with 31s in them, and are thinking about switching everything back to 31s. You can get better reserve capacity batteries in group 31 for all the extra stuff sucking down our voltage - 8Ds are pretty much just starting batteries.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
 


School Bus Fleet Magazine Forums © 2013 School Bus Fleet Magazine Go To Top Of Page
This page was generated in 0.16 seconds. Snitz Forums 2000