quick way to see if the battery is killing during start is, put a voltmeter on the battery see your reading then try and start the vehicle (with the voltmeter on it the whole time) then see if the voltage drops significantly when trying to start. if your saying that it basically does nothing when u try and start chances are your battery is no good, and you'll see the voltage drop down as soon as u go to start. you also can do the same thing but check amps.
After what happened to your battery i'm sure its no good, I personally always change boiled over/over charged batteries.
best of luck