AT Pro battery covered in oil?

[Keppy]

My grandson has not used his AT Pro for a few years now so we were going to put new battery's in it. So when we took the old ones out i thought they would be corrosive but they were not and as far as i could see not leaking . BUT they were all covered with a thick sort of sticky clear oil .WHAT would that be on them?

 

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[Back-of-the-boat]

Sounds like battery acid.

 

[Keppy]

Sounds like battery acid.

I never seen acid like that it stuck to my hands. Then how would i get it from inside the detector battery compartment?

 

[Back-of-the-boat]

I had some starting to go and they were exactly like that. I think being sealed up inside the machine changes the way the acid acts. I had a small amount of corrosion on the battery holder on the springs luckily it hadn't gotten to the electronics yet.

 

[Back-of-the-boat]

I remove my batteries after every use now.

 

[Keppy]

I remove my batteries aftter every use now.

OK thanks i did not know what that was on those battery's. I had a time getting it off my hands.

 

[alloy_II]

Probably the electrolyte used in carbon zinc battery its ammonium chloride a water soluble compound that turns white when dried out.

Ammonium chloride is also used as a soldering flux while food grade is used to make licorice.

The zinc chloride battery comprising thin separators, improved seals, and zinc chloride instead of ammonium chloride as electrolyte yields substantially improved performance on heavy-drain applications and less cell leakage. Both types are mainly characterized by low cost, ready availability, and an acceptable performance for many applications.

 

[Gare]

if i was to be I would say a type of Battery Acid. There is no place in the control box that there should be oil