Battery Question

[M215]

Hello all,
Just installed new batteries in the M35 and noticed a small spark when attaching the last terminal. What would cause this when the main switch is off? Will this draw drain the batteries?
Thanks, Karl

 

[Desert Rat]

M215,
Not all circuits are run through the main switch. Some circuits are connected in other ways. The small arcing measns one of the auxilluary curcuits has not been switched off. This could be a heater motor switch or some other smaller system not connected to the main line. Go back and be sure all switches, not just the main, are actually off. I know with my truck if the post sparks usually a system has been left on by accident.

 

[M215]

Hey D. Rat,
Ran outside to check, everything is off. The only aux system I have is the light switch, no heater.
Thanks for the info.

 

[Pappa-G]

My truck also does this. It will drain the batteries after a couple of days. I put a lever type disconnect switch between the batteries and havent had a problem since(it also doubles as a theft deterrent). Let me know if you find the short. ~ Pappa-G

 

[M215]

Pappa-G
I have been leaving the neg. terminal off when the truck sits. I like the idea of the switch, where did you get yours?

 

[Low-Tech-Redneck]

You'll also get sparks, and lots of them, if you accidentaly should be tightening the clamp on one battery with a wrench, and accidentaly touch the other end of that very wrench to a terminal on the OTHER battery......

That was an experience and a half

 

[Pappa-G]

I got mine at either Tractor Supply Co. or at Napa, Good Luck! ~ Pappa-G

 

[Desert Rat]

LTRN,
I guess that's why your hair is super curly and smoking? Mine too.

 

[cranetruck]

The regulator is always connected to the battery. It has a capacitor that may produce a spark when the terminals are connected. The drain is very small, in the order of a few milliamps, though.
To keep your batteries fresh, use solargizers or other charger/maintainer on them at all times.