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<blockquote data-quote="chardy85" data-source="post: 5621662" data-attributes="member: 566390">My cousins car has done the same thing a couple times. It took us a while to figure out what was going on. It actually ended up being a bad battery the SECOND TIME.BUT, the first time we found out that it was the plug that goes into the Alternator. It was barely plugged in and sometimes the battery would be getting charged and other times it would not.If your DMM checks AMPS then go ahead and try what Dman suggested. This is going to find out quickly if something inside your car is draining the batt.IF your DMM does not check AMPS then&amp;gt;&amp;gt;&amp;gt;&amp;gt;&amp;gt;&amp;gt;&amp;gt;My father is mechanic and told me a couple things to try when we were having problems.First. He said go ahead and charge the battery up full at the end of your day. Check with DMM.Unhook the Neg cable like Dman said. Leave this cable unhooked all night and then go test the Batt&#039;s Voltage in the morning. If it is fully charged then it is most likely NOT the battery.Next. Charge the Batt fully again. Leave all cables hooked up and repeat the steps from above. If the voltage is drained quite a bit then most likely something is draining the battery.It could be many diff things that could drain it and it is sometimes a big B**** finding electrical problems like this.Good luck manCurtis</blockquote>

[QUOTE="chardy85, post: 5621662, member: 566390"] My cousins car has done the same thing a couple times. It took us a while to figure out what was going on. It actually ended up being a bad battery the SECOND TIME. BUT, the first time we found out that it was the plug that goes into the Alternator. It was barely plugged in and sometimes the battery would be getting charged and other times it would not. If your DMM checks AMPS then go ahead and try what Dman suggested. This is going to find out quickly if something inside your car is draining the batt. IF your DMM does not check AMPS then>>>>>>> My father is mechanic and told me a couple things to try when we were having problems. First. He said go ahead and charge the battery up full at the end of your day. Check with DMM. Unhook the Neg cable like Dman said. Leave this cable unhooked all night and then go test the Batt's Voltage in the morning. If it is fully charged then it is most likely NOT the battery. Next. Charge the Batt fully again. Leave all cables hooked up and repeat the steps from above. If the voltage is drained quite a bit then most likely something is draining the battery. It could be many diff things that could drain it and it is sometimes a big B**** finding electrical problems like this. Good luck man Curtis [/QUOTE]

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