My sons '73 Mav with 250, Automatic, keeps killing the battery. YES it has a stereo system with I think, a 1000W amp. However, its been in there for a while now. When the old battery died, I jumped the car off and took it to the local Advance Auto and had them check it. They said; bad battery, and sold me one of their Economy series batteries and it promply died 3 days later. I then returned to advance and a different guy there said they shouldnt have sold me an economy battery for a car with and AMP, so we up graded to a larger Platinum series battery. 3 days later, same thing, yet they didn't detect a problem in the charging system when they checked it. Any ideas? Where should I look first? Alternator, regulator.....????? Thanks, Brad
If they didn't find a problem with the charging system, sounds like you got something drawing power while the car is off.
Whats the best way to check for that? I saw in one thread where someone has a similar exerience and it was the starter that was draining the battery.
pull the positive cable off the battery, connect a test light between the cable and the post, if the test light lights up something is drawing power. be sure to run the same test with anything else that may be hooked directly to the battery...
