When you car is turned off your battery doesn't have the alternator pushing that constant stream of voltage to your battery to keep it charged. So your looking at a decrease in voltage by 2 - 3 volts while car is off. No part will fix this just simply start your car before you turn on your head lights.
Check the battery cables or starter.
Battery is dead?
You need to replaced the starter or the alternator.
Sounds like a bad alternator. The alternator runs the accessories as well as the charging of the battery, whereas the battery is resposible for start up. If you had to charge your battery that also means that alternator wasn't doing it's job and needs to be replaced. Its not a big deal to swap it out.
It sounds like you have a break in the wire which connects your alternator to your battery, get it checked out.
Dead Battery Failed Alternator, or a failed starter.
something is draining the battery. a new battery will last a couple days if just starting the car. even if your alternator is bad.
If the 2000 Cavalier has no lights an will not start, there is an electrical issue. Check the battery, alternator, and the wiring from the battery all the way to the starter to find the problem.
could be the alternator or starter sounds like the alternator if the battery is gone flat get the alternator tested at auto parts or garage jump charging the battery might get you out of trouble for a bit
you might need a new alternator. thas what happend to mine. Did any dash board lights come on and the radio start changing by itself?
Blown alternator fusible link. 140 A in a fuse box near battery
Im having the same problem, except for I just replaced my alternator, my battery is 2 years old, I have checked and tightend all connections on the battery, and it ohmed out at 12.5 volts... what the heck, I got jumpstarted after i replaced the alternator, drove home, and I turned my lights on and my car almost died electrically, let it run for about 20, shut it off, and now when I turn my key I get absolutely the dash of death, no lights or noises or anything... crickets chirping My question is: if you have no lights or power when you turn the key, and the battery and alternator are good.... what else can it be??