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05-11-2021, 07:17 PM
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#1
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Member
Winnebago Owners Club
Join Date: May 2009
Posts: 72
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Batteries
winnebago 2001 journey 36ld
I currently have 3 group 31 130A/H batteries.
We never dry camp or use appliances that drain the house batteries. Question is can I get by with 2 group 31 130A/H batteries instead of 3 ???
Thanks
John
__________________
John and Susan plus Frankie the cat
2001 Journey WKP36LD 330 cat
Freightliner Chassis Alero toad
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05-11-2021, 08:19 PM
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#2
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,957
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Yes, but adjust your battery charger accordingly, otherwise you'll boil the cells dry.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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05-11-2021, 08:20 PM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 35,441
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Sure, 2 will work. If you find some situations where you can't, add the 3rd battery.
You should set your absorb time to a lower setting, but even if you don't, you'll just get a half hour more absorb time then recommended.
The bulk charge is the same, as is the float voltage. Not a big deal.
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05-11-2021, 09:57 PM
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#4
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,957
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Quote:
Originally Posted by twinboat
Sure, 2 will work. If you find some situations where you can't, add the 3rd battery.
You should set your absorb time to a lower setting, but even if you don't, you'll just get a half hour more absorb time then recommended.
The bulk charge is the same, as is the float voltage. Not a big deal.
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That depends upon the inverter/charger. If mine is not manually changed the bulk charge is 100A, far too much for 2 100A batteries. The maximum bulk charge should be 30% of lead-acid battery capacity.
reference: https://www.eastpennmanufacturing.co...eters-1913.pdf
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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05-12-2021, 06:23 AM
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#5
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Nov 2018
Posts: 2,521
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Huh, I hadn't seen a battery spec 30% bulk rate until now. Trojan spec's 13% FLA and 20% AGM.
Mark B.
Albuquerque, NM
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05-13-2021, 08:58 AM
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#6
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Member
Winnebago Owners Club
Join Date: May 2009
Posts: 72
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Batteries
Thank you guys, I will give it a try with 2 batteries.
I just read I should turn off the inverter when not plugged in to shore power as this will deplete the house batteries, isn't that what the disconnect switch on the dashboard does?, and can I leave it off when driving?.
__________________
John and Susan plus Frankie the cat
2001 Journey WKP36LD 330 cat
Freightliner Chassis Alero toad
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05-13-2021, 10:59 AM
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#7
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Senior Member
Winnebago Owners Club
Join Date: Aug 2012
Posts: 465
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The disconnect switch probably does not normally turn off the inverter. Go to the inverter control panel and it should give you at least two setting - "off" and "override by charge". Use the "off' setting. Leave the batteries connected while driving, but you can leave the inverter "off"
__________________
Skip Y
2010 Journey, 2015 Equinox
Location: MI
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05-29-2021, 10:57 AM
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#8
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Member
Winnebago Owners Club
Join Date: May 2009
Posts: 72
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Mighty Max Batteries
Has anyone replaced 130AH flooded batteries (like mine) with these 100AH gels. What is the downside?
https://www.mightymaxbattery.com/sho...h-sla-battery/
Cheers
John
__________________
John and Susan plus Frankie the cat
2001 Journey WKP36LD 330 cat
Freightliner Chassis Alero toad
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05-29-2021, 03:21 PM
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#9
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Senior Member
Join Date: Jul 2014
Posts: 35,441
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Quote:
Originally Posted by Golfinscorp
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They are AGM , not gel batteries.
The downside is a net loss of 30 AH of capacity per battery.
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05-29-2021, 04:27 PM
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#10
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Member
Winnebago Owners Club
Join Date: May 2009
Posts: 72
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Downside
Quote:
Originally Posted by twinboat
They are AGM , not gel batteries.
The downside is a net loss of 30 AH of capacity per battery.
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We don't dry camp so should I care about a loss of 30AH per battery?.
My concern is that they are suitable for my rig/inverter/charger.
Yes, after looking at dozens of battery makes/types I see I mistyped gel for agm.
Thanks
John
__________________
John and Susan plus Frankie the cat
2001 Journey WKP36LD 330 cat
Freightliner Chassis Alero toad
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05-29-2021, 07:37 PM
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#11
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Senior Member
Join Date: Jul 2014
Posts: 35,441
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Quote:
Originally Posted by Golfinscorp
We don't dry camp so should I care about a loss of 30AH per battery?.
My concern is that they are suitable for my rig/inverter/charger.
Yes, after looking at dozens of battery makes/types I see I mistyped gel for agm.
Thanks
John
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They will work, just make sure you don't charge them at more then 27 amps per battery, somewhere around 80 amps for 3 of them.
If you never dry camp, just by 1 or 2 batteries.
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05-30-2021, 02:22 PM
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#12
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Member
Winnebago Owners Club
Join Date: May 2009
Posts: 72
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Thank you, appreciate the help.
__________________
John and Susan plus Frankie the cat
2001 Journey WKP36LD 330 cat
Freightliner Chassis Alero toad
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06-05-2021, 07:04 AM
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#14
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Nov 2018
Posts: 2,521
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Quote:
Originally Posted by Golfinscorp
My questions are: Which 3 (or maybe 2) batteries would work best, Wet, AGM or Gel. Would love to get away from maintenance if poss.
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You can narrow your search to AGM. Wet cells aren't maintenance free and gel's are not suited to RV storage use.
Mark B.
Albuquerque, NM
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