RV.Net Open Roads Forum: 2 - 6 Volt Batteries - Newb question

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 Tech Issues

Open Roads Forum  >  Tech Issues

 > 2 - 6 Volt Batteries - Newb question

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next
Sponsored By:
tonykennard

Sherwood Park, Alberta

New Member

Joined: 06/11/2019

View Profile


Offline
Posted: 06/11/19 10:41pm Link  |  Quote  |  Print  |  Notify Moderator

Good evening! First time poster, long time reader!

My 2 year old 2018 Funfinder 31BH is equipped with 2 - Interstate 6 Volt Deep Cycle Batteries (GC2-ECL-UTL). I noticed the other day that panel lights showed only the bottom light (basically dead batteries) when checking charge level on them even though they had been used very sparingly. I brought the batteries home, stuck them on the charger (BatteryTender Plus) for a charging cycle (about 1.5 days). when it was fully charged this morning I unhooked and let them sit for the rest of day. When I got home from work, I check resting voltage and Specific Gravity numbers and was shocked to find the following..

Battery F7
6.5 Volts
1 - 1.225
2 - 1.220
3 - 1.225

Battery H7
6.6 Volts
1 - 1.235
2 - 1.225
3 - 1.220

Am I correct in assuming these will require a equalization? I'm at a loss as to why the voltage readings are ok after the charge, but the specific gravity is so low. It was reading right at the line between white (ok) and red (discharged) on my hydrometer from Canadian Tire (not the greatest Hydrometer I don't think)

Any help would be greatly appreciated!!

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 06/11/19 11:36pm Link  |  Quote  |  Print  |  Notify Moderator

Yes, and the batteries may be quite sulphated.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

3 tons

CA.

Senior Member

Joined: 03/13/2009

View Profile


Online
Posted: 06/11/19 11:39pm Link  |  Quote  |  Print  |  Notify Moderator

I don’t see an obvious problem, but maybe this will help:

http://support.rollsbattery.com/support/solutions/articles/4347-measuring-specific-gravity

MEXICOWANDERER

las peñas, michoacan, mexico

Senior Member

Joined: 06/01/2007

View Profile


Offline
Posted: 06/12/19 12:20am Link  |  Quote  |  Print  |  Notify Moderator

WOOL clothing is immune to battery acid.

Wear safety glasses

Make yourself comfortable and don't rush things.

I have equalized hundreds of batteries (may well be an understatement)

Some three cell GC batteries have taken in excess of 16 hours to equalize.

11 ELEVEN AMPS constant until voltage reaches 8 volts or 16 in aeries.

Sam Spade

North Central Florida

Senior Member

Joined: 11/05/2015

View Profile


Offline
Posted: 06/12/19 07:22am Link  |  Quote  |  Print  |  Notify Moderator

I don't see a problem either, at least not one worth worrying about too much.
What exactly makes you think that the SG is low ??
The specific chemistry for that model battery might affect the SG readings some.

I would be more worried about checking your charging equipment.....and your usage routine....to see why they are going flat.


'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 06/12/19 09:08am Link  |  Quote  |  Print  |  Notify Moderator

This url may help:

http://www.batteriesnorthwest.com/batteryschool.cfm?TID=5#ANC5

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 06/12/19 09:32am Link  |  Quote  |  Print  |  Notify Moderator

What converter or charger normally charges these batteries?
Probably need to upgrade.

If parked in the sun consider 100 to 400+ watts solar.


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

Sam Spade

North Central Florida

Senior Member

Joined: 11/05/2015

View Profile


Offline
Posted: 06/12/19 09:35am Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

This url may help:


Good chart but incomplete.
Temperature has a substantial impact on specific gravity.

And voltage and SG usually track pretty closely.
Nominal voltage for a 6 volt battery is 6.3.

So his voltage and SG readings don't "track" with each other.....and one or the other is "off" or the chemistry of the battery means that it won't follow the chart for a "conventional lead acid" one.

rrupert

NW PA

Senior Member

Joined: 02/26/2005

View Profile


Offline
Posted: 06/12/19 10:26am Link  |  Quote  |  Print  |  Notify Moderator

You may want to upgrade your converter to better handle charging the GC2 batteries. I started a thread on the subject and got some very good information in response:
Boondocker Converters vs. Progressive Dynamics Converters?


Rich and Joyce
2018 Jayco Jay Flight 21QB
2012 Ford F150 4X4 Supercrew EcoBoost
Reese Strait-Line Dual Cam Hitch
Amateur Radio K3EXU


allen8106

Burrton. KS

Senior Member

Joined: 01/31/2012

View Profile



Good Sam RV Club Member

Offline
Posted: 06/12/19 11:13am Link  |  Quote  |  Print  |  Notify Moderator

Batteries need to be equalized at least monthly to stay healthy. If your converter can't do that then you need to find an alternative.


2010 Eagle Super Lite 315RLDS
2018 GMC Sierra 3500HD 6.6L Duramax

2010 Nights 45
2011 Nights 70
2012 Nights 144
2013 Nights 46
2014 Nights 49
2015 Nights 57
2016 Nights 73
2017 Nights 40
2018 Nights 56
2019 Nights 26


Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next

Open Roads Forum  >  Tech Issues

 > 2 - 6 Volt Batteries - Newb question
Search:   Advanced Search

Search only in Tech Issues


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

Adjust text size:

© 2019 CWI, Inc. © 2019 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS