Wikipedia's got nothing on it.
A pdf from the Virginia Department of Health estimates the oral lethal dose of kerosene for 1-2 yr old children to be about 2-17 kilograms in one day, but a man who washed his hair with the stuff suffered serious hemorrhages. So, kerosene -> possibly fatal, definitely uncomfortable.
A quick search didn't turn up any explicit numbers for battery acid, but, since it's pretty much just sulphuric acid, drinking any amount would burn your entire esophagus and likely a hole right through your stomach as well, which would obviously be fatal.