You get super charged like the energizer bunny, meaning you shall be forever known as a supere hero
If you swallow a battery I would seek medical attention immediately.
it leaks
If you suck on a battery, nothing will happen, but you will be sucking in bacteria. If you swallow one (which is unlikely to happen to anyone) then you'd probably die.
I believe it causes full power of battery flow to the neg. Where used photons of energy should be. Perhaps it gets hot enough then leaks?
yes
Yes it can and will if you swallow enough. The liquid out of a wet cell battery contains Sulfuric Acid, which is deadly to humans if ingested.
Nothing happens
You Die
you die
you die...
pain
You can get chemical burns along your throat and stomach if you swallow lye.