RV.Net Open Roads Forum: Travel Trailers: 6 volt batteries, discharge limits

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Travel Trailers

Open Roads Forum  >  Travel Trailers  >  General Q&A

 > 6 volt batteries, discharge limits

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Sponsored By:
LVJJJ

NW WASHINGTON

Senior Member

Joined: 12/29/2006

View Profile



Good Sam RV Club Member

Offline
Posted: 10/15/20 04:06pm Link  |  Quote  |  Print  |  Notify Moderator

I looked thru the search field but as usual couldn't find my answer.

I have just bought two 6 volt Deka batteries from Lowe's. Haven't used 6 volts in years so can't remember how deep you can discharge them before ruining them??


1994 GMC Suburban K1500
2005 Trail Cruiser TC26QBC
1965 CHEVY VAN, 292 "Big Block 6" (will still tow)
2008 HHR
L(Larry)V(Vicki)J(Jennifer)J(Jesse)J(Jason)

Flute Man

Payson, Arizona

Senior Member

Joined: 03/21/2019

View Profile


Offline
Posted: 10/15/20 04:33pm Link  |  Quote  |  Print  |  Notify Moderator

For maximum life recharge at the 50% mark which I remember as 12.1 V. You should be able to look them up online Using Google search or the like.


Jerry Parr
05 Mandalay 40B
Cat C7 350
04 Honda CR-V
Ham Radio K7OU
Retired EE
Jrparr32@gmail.com
602-321-8141
Full-timer

Lwiddis

Camping near Pearsonville, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 10/15/20 04:34pm Link  |  Quote  |  Print  |  Notify Moderator

Open ended question. Do you want maximum battery life? Do you want to use maximum amp hours? Fifty percent isn’t a magic number. This isn’t simple while some RVers would like it to be. It’s a number on a chart. Here is Trojan’s chart...

[image]


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


Lwiddis

Camping near Pearsonville, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 10/15/20 04:46pm Link  |  Quote  |  Print  |  Notify Moderator

Maximum battery life is not achieved by discharging to only fifty percent. According to Trojan’s chart, maximum charted life is obtained by a twenty percent discharge maximum. Twenty percent discharges equal 3000 cycles. Fifty percent discharges equal 1200 cycles.

corvettekent

Marysville, WA

Senior Member

Joined: 09/21/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 10/15/20 05:38pm Link  |  Quote  |  Print  |  Notify Moderator

Most people will tell you 50% discharge, but my first pair of 6 volt batteries I discharged until the lights got dim because I did not know any better and I still got 7 years out of them. 50% is a very safe number but don't freak out if you drop below that.


2007.5 GMC Dually EC/LB, LMM. Banks IQ, Speed Brake, Six Gun. B&W Turnover Ball, Companion Hitch, Amp power steps. Hadley Air horns.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT and four 6 volt batteries. Samlex 2,000 watt Pure Sine Wave Inverter.


KD4UPL

Swoope, VA

Senior Member

Joined: 03/16/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 10/16/20 01:25pm Link  |  Quote  |  Print  |  Notify Moderator

The deeper you discharge the shorter the life. The shallower you discharge the longer the life. It's a curve as that above posted Trojan chart demonstrates. I would look up the discharge/life curve for your batteries and pick your compromise point.

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 10/16/20 03:39pm Link  |  Quote  |  Print  |  Notify Moderator

If you cycle them down 80% 50 times a year they should last more than 10 years according to the chart.
Bigger issue IMO is to get them charged back tip top 100% often enough that they do not sulphate.


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Travel Trailers  >  General Q&A

 > 6 volt batteries, discharge limits
Search:   Advanced Search

Search only in Travel Trailers


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.