RV.Net Open Roads Forum: Help why is my battery terminal corroded and sparking?

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 Beginning RVing

Open Roads Forum  >  Beginning RVing

 > Help why is my battery terminal corroded and sparking?

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

Beautiful Pacific Northwest

Senior Member

Joined: 07/30/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 10/13/20 04:56pm Link  |  Quote  |  Print  |  Notify Moderator

Last looked at these batteries one month ago. Today before our trip there is a small amount of blue green corroding at the terminal, and along 3 red wires connecting to it at their terminals. Also there is a small amount of sparking when the red wire is brought to the terminal. Never seen this before. What's going on?

I was able to clean corroding off battery terminal and that actually looks fine.

Lwiddis

near Jawbone Canyon, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 10/13/20 05:02pm Link  |  Quote  |  Print  |  Notify Moderator

Are you using a battery terminal sealer?


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)


352

Oxfofd, Fl

Senior Member

Joined: 04/20/2004

View Profile


Offline
Posted: 10/13/20 05:05pm Link  |  Quote  |  Print  |  Notify Moderator

I dont know[emoticon]


The manatees of Halls river Homosassa Springs Fl

1985 Chevy Silverado c10. 454 stroker / 495 CI = 675 HP. 650lb of torque. Turb0 400 tranny. 3000 stall converter. Aluminum heads. 3 inch exhaust flowmasters. 2 inch headers. Heat and air. Tubed.


rvshrinker

Beautiful Pacific Northwest

Senior Member

Joined: 07/30/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 10/13/20 05:10pm Link  |  Quote  |  Print  |  Notify Moderator

The vehicle is unplugged so there's no other source of power. Solar was turned off. Batteries have adequate water. Vehicle had been kept plugged in on 30 amps.

I unhooked the negative terminals and sparking stopped.

Lynnmor

Red Lion

Senior Member

Joined: 07/16/2011

View Profile



Good Sam RV Club Member


Posted: 10/13/20 05:12pm Link  |  Quote  |  Print  |  Notify Moderator

1. Battery is beginning to fail causing electrolyte to cook out.
2. There is a bad connection between metal parts.
3. Battery is being over charged.
4. There is a load turned on while connecting wire.
5. The converter is on causing the spark.

Choose one or more of the above.





time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 10/13/20 05:17pm Link  |  Quote  |  Print  |  Notify Moderator

Did you leave a light on? Fan? Radio? Fridge?


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

Lwiddis

near Jawbone Canyon, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 10/13/20 05:41pm Link  |  Quote  |  Print  |  Notify Moderator

Why would you turn off your solar system if you have a quality controller? Solar controllers are designed to properly maintain batteries!

theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 10/13/20 05:57pm Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

Last looked at these batteries one month ago. Today before our trip there is a small amount of blue green corroding at the terminal, and along 3 red wires connecting to it at their terminals.

Corrosion forming around lead acid battery terminals is from a small amount of gas that is leaking around the terminals. It is impossible to prevent this leakage as a battery ages. You can buy those pricey battery post "donuts" or just gob a large amount of Vaseline on the post and terminal/clamp. Remove the terminal so that the Vaseline get under the terminal/clamp right up close the the seam between the post and the case.

BEFORE YOU DO THIS, clean the terminals, cable ends and the ENTIRE BATTERY OUTSIDE CASE with baking soda and water. Rinse well with clear water.

rvshrinker wrote:

Also there is a small amount of sparking when the red wire is brought to the terminal. Never seen this before. What's going on?

If it is small, ignore it. It just means that something is turned on when you connect it.

theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 10/13/20 05:59pm Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

1. Battery is beginning to fail causing electrolyte to cook out.

I would not condemn the battery just yet, but I will bet it is a couple of years old !

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Offline
Posted: 10/13/20 06:13pm Link  |  Quote  |  Print  |  Notify Moderator

^What Lynmor said.
In particular #3. Plugged in continuously charging. Does your converter also function as a battery maintainer?
If it does not, it is overcharging the batteries due to little to no draw on them and full charging amperage.
1 of 2 Solutions there.
1. Disconnect batteries when not in use and periodically charge them or put a maintainer in them.
2. Depending on your converter, you can add a Charge Wizard to progressive dynamics converters. Possibly similar for other brands that monitor voltage and maintain the batteries.

Corrosion is leakage. May not come back if not overcharging. Or may.
In the past I’ve cleaned up old batteries around the terminal base and put a coat of rtv sealant around them. Stops minor leakage for a while.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

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

Open Roads Forum  >  Beginning RVing

 > Help why is my battery terminal corroded and sparking?
Search:   Advanced Search

Search only in Beginning RVing


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.