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Topic: Batteries (Read 3171 times) previous topic - next topic

Re: Batteries

Reply #50

I just want to follow up on this.  As suspected, too good to be true.  After paying for the FMCA and Diesel RV Club subscriptions, found out that the discount on batteries at O'Reilly is about $10 each.  Not disputing Roger's claim to pay $105 each for the AGM group 31's (which I am jealous as all get out about), but someone screwed up when they processed that purchase.  Guy at my store said there is no possible way that discount was correct as that is way less than the best employee discount available at the store.
2000 U320 4010

Re: Batteries

Reply #51
Sorry, that was a typo, they were $205 each.

We like these batteries, we switched to a gear reduction starter too and easy starts followed.  And probably saved 30 lbs too. 

An upcoming project (in the long and never ending line of projects to do) is to redo all of the start battery wiring, add switches and a shunt and new cables to the starter. 
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Batteries

Reply #52
Roger..
 What would the addition of a shunt on the start batteries be for.      Enhanced monitoring maybe.
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: Batteries

Reply #53
If you have an open battery storage and can go with conventional batteries, our Autozone duralast batteries have been good for many years. 60 lb 950 CCA 31 series for $300 for all three batteries with 10 percent discount for three and core exchange. They always seem to last about 10 years. 2850 CCA should be enough for anyone for any season. I tie the conventional and AGM together while at home on shore charge.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Batteries

Reply #54
My solution.
1998 36 foot U270 Build No. 5328 WTFE, 900 watts solar, Victron controller, B2B, bat monitor, 600 AMPH lithium with 2018 Chevy Colorado toad, SKP #110239, Motorcade #17781, 2021 Escape 17B for when Coach is broken down and campsites are too small, retired and full-timer since Dec. 2020. Part of RV family since 1963.

Re: Batteries

Reply #55
Bob, mostly because I have two BMV monitors and shunts.  Then I can monitor SOC on the start batteries and all the other data. A disconnect switch on both + and - sides, batteries to bus bars. 
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

 

Re: Batteries

Reply #56
Here are the specs on my LIFEPO4 12VDC auxiliary  / engine start battery, located in the bedroom. There are four 3.3VDC cells in series. See photos.

I installed them because they can output 4000 Amps for 5 seconds. The starter requires 1800 Amps. As an auxiliary battery, they can run critical house systems for days.

https://files.ev-power.eu/inc/_doc/attach/StoItem/1706/ThunderSky-Winston-LIFEPO4-400Ah-Datasheet.pdf

If properly managed, the pack should last another 10 years.
1997 U270 34FT Build 5140 Cummins 8.3 Allison 3060R
Solar 1920Watts, 14KWH lithium. Orion BMS.