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1.
The combination of sweat, and vaginal discharge that collects in and around a girls vagina after any strenuous exercise, usually a night of dancing at a club.

This combination of fluids creates a liquid so sour, it can literally dissolve the tastebuds right off your tongue!!

See. groin juice
Dude, i just went down on that chick in the bathrooms and now i cant feel my tongue!! That was some serious battery acid!!
by Clinton Howes February 21, 2008
 
2.
Pay no attention to that other definition. The REAL battery acid is a mixture of a sparks energy/alcohol drink with 2-4 shots of your favorite vodka, preferrably a citrus, making one hip drink. The term "battery" comes from the striking similarity the can has to an energizer battery. Just hook it up and get ready to party.
Partygoer #1: Check out Teo on the dance floor. How's he able to blow up so huge?!
Partygoer #2: Must've had some battery acid.
by crazy b May 14, 2005
 
3.
A drink that you drink when you wanna feel the best high of your life. It got its name "Battery Acid" because when you take 1 sip its like death yet the best feeling you'll possibly feel.
You need:
8 Triple C Cough & Cold
1 Pack of Strawberry Cool aid
1/4 Cup of Sugar
Red Party Cup
and Water.
Imagine Being on another planet...
The action of drinking "Battery Acid" is called "The Raines"
by Gucci Bodatucci December 09, 2009
 
4.
The contents of lead-acid, or 'wet' cells (The kind you find in your car, for instance.) In this instance, it would be sulphuric acid.

Not to be confused with the electrolyte paste found inside 'dry' cells (The ones in your torch, for instance). This paste is actually an alkali.
Car batteries have battery acid in them. AA, AAA, C and D cells do NOT.
by Zakarius September 19, 2005
 
5.
The stuff inside storage batteries
If vegetables could talk, i would cut them up and throw them into battery acid.
by ggggggggg February 14, 2005
 
6.
Any of several "diet" sodas, especially Diet Coke or Diet Pepsi. The term originates from the drinks' taste.
"Do you want some battery acid, man?"
"No, thank you."
"Ah well. More for me."
by Oberstille May 05, 2005