if the li-ion battriers are over charged it might swell or if it is a low quality battery (china mobile) even it may blast..
death 2 the bulb
It might be overcharged. Or you might have contaminants in the system like air or acid.
Batteries in general are built to not leak. The components needed to keep an electrical charge are poisonous and can be extremely hazardous to your health if swallowed or even touched. A probable cause of a battery leaking would be exposure to extreme temperatures that the inner components do not do well with. Also, after prolonged periods of time, the battery metals might begin to rust and decay, thus allowing the leak.
You can speak with an attorney regarding possibly suing a used car dealer in PA. If you were overcharged and the vehicle is having issues, you might be out of luck if you purchased it 'as is.'
If it was done on a cooler day it might be overcharged.
The batteries you put in might have been defective.
Actually a battery is a group of cells.Sometimes a group of batteries might be called a battery bank.
If you added more batteries in parallel, then the bulb would shine for a long time. If you added more batteries in series, then the bulb would burn very brightly for a short time and then 'burn out'.
no... they might run out of batteries.
The batteries would get very hot, the cables might be set on fire and the metal screen could get so hot it might melt. This experiment is likely to be dangerous so don't do it! There is no reason for anyone to want to trash a good pair of jumper cables and a metal screen this way...
If the batteries have EXACTLY the same voltage, then nothing will happen, because there will be no voltage drop in the circuit, and hence no current. If the batteries have SLIGHTLY different voltages, then there will be a voltage drop in the circuit. Since there is low resistance, there might be high current, causing damage and/or an explosion. In all probability, however, there is enough internal resistance in the batteries to simply cause them to equalize in voltage.
No, just buy the batteries. However you might need permission to mention them in advertising.