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Open Roads Forum  >  Beginning RVing

 > Help why is my battery terminal corroded and sparking?

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Etstorm

Frankston,TX

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Posted: 10/13/20 09:17pm Link  |  Quote  |  Print  |  Notify Moderator

I will ask the obvious

Is the connection tight?

rvshrinker

Beautiful Pacific Northwest

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Posted: 10/14/20 10:51am Link  |  Quote  |  Print  |  Notify Moderator

It's possible the connection was not very tight. I cleaned everything up and tightened it and there was a tiny spark, which as some have mentioned might be normal. Obviously it's right next to my propane so I don't want to take any chances. I have to unhook my connections every time we get home and take off because I have an electric dolly to move my trailer into its carport, and the dolly requires the trailer batteries for power.

I will add some vaseline as well.

The batteries are original 3 yo 6v deep cycle. The trailer stays plugged in at all times we are not camping. I never use the tiny solar panel and it's under a carport anyway.

Grit dog

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Posted: 10/14/20 11:48am Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

I have to unhook my connections every time we get home and take off because I have an electric dolly to move my trailer into its carport, and the dolly requires the trailer batteries for power.


The batteries are original 3 yo 6v deep cycle. The trailer stays plugged in at all times we are not camping. I never use the tiny solar panel and it's under a carport anyway.


^ That sounds like a pain in the ___, unless it's only couple times a year. Wire up a simple winch plug or similar and plug the dolly in when needed.
But you didn't address the most important question. Are you slow cooking your batteries or not?


"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.

Ava

Vancouver Island. BC Canada

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Posted: 10/14/20 02:38pm Link  |  Quote  |  Print  |  Notify Moderator

Getting a spark when hooking up to a battery terminal means there is a draw on the system that is waiting for power. You need to know what is operating directly from the battery.

BarabooBob

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Posted: 10/14/20 07:36pm Link  |  Quote  |  Print  |  Notify Moderator

Unless you have a battery disconnect switch that is turned off or have the battery fuse in the converter removed, you almost always have a circuit wanting power. On my TT, things that are always drawing power are the CO detector and the radio (even when turned off) When you attach the battery cable, there will be a spark as the circuit is completed for these items.


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Gjac

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Posted: 10/15/20 09:15am Link  |  Quote  |  Print  |  Notify Moderator

If you have a multimeter set it to 10 amps and check the amp draw. If you see several amps something is left on. If less than 1 amp it is it is normal parasitic draw. My is about .4amps and will spark when I connect my neg cable to post. Don't overfill cells with water, clean connections every so often, and clean the top of your batteries also to minimize self discharge.

Diamond c

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Posted: 10/18/20 06:12pm Link  |  Quote  |  Print  |  Notify Moderator

A small spark when conecting battery cables is normal. You can buy battery carosion remover and preventer at autozone. Works very good.

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