dead battery 99 lesabre

the battery is new alt. has no draw. i thought it might be fuel pump relay sticking intermitantly. when i start it i smell raw gas for a brief time. it's happend three time's in one week. I insert a test light between cable battery the light bright then goes out. has anyone had this problem.
thank you:banghead:

For a fully charged battery to go dead, ( no period of time mentioned), your alt output has to be low, bad cable connections or some kind of draw.

how long dose it take to drain battery? are your cables good and clean? because they may look good on outside but when you take them off what do they look like?

cable's are clean alt output 14.8 cold with the battery not fully charged 13.8 after charged no bad dioeds in alt. like i said i connect test light between cable & battery the light is bright at first then goes out. mabe their is a module that shuts off because it does not receive enough amp. it takes 12 to 18 hours to discharge. does anyone know a better way to check for drain.
thank you

I sent you a PM with some details concerning the testing procedure for parasitic drain. Good Luck

:smile: Problem solved went to another store to have battery load tested it was bad the other store had bad load tester. I had a snapon tester some where can't find it in my storage. thanks every one . One bad test and you ? your test skills.