Why is my new car battery going dead?

The car is a '95 Nissan Maxima. Three weeks ago, I replaced it's dead battery for a new one.

Alternator checked out OK.

Got in the thing this morning--and the new battery was completely dead. There wasn't any lights left on; no doors left ajar--and I don't think that even if a dome light was left on all night, it would totally drain the battery as I found it to be.

Not being mechanically inclined when it comes to complex automobile electronics or engines, this problem is a Scooby-Doo mystery I seek help from fellow Yahoo Answerers who have knowlege in auto mechanics and/or electronics.

What possibly be draining the battery like this?

Anonymous2006-07-06T12:01:49Z

Favorite Answer

Do you have a voltage regulator? You probably need a new one. Your Alternator "switch" may need replacing also! Did you check your ground wire on the battery to the car frame? This is a common "drainage" problem in older cars. You should go over every wire & check for wear & proper lead connections. Take a look at HOW your battery is held in place & make sure that when the hood is closed, that it isn't shorting itself out by touching the metal. You may just need new battery cables & a new ground wire! Also check your starter connections & coil wires as these could drain your battery. Maybe you just got a bad battery to start with!

?2016-11-10T04:26:26Z

Car Battery Dead

Fabiano2015-08-10T14:14:15Z

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RE:
Why is my new car battery going dead?
The car is a '95 Nissan Maxima. Three weeks ago, I replaced it's dead battery for a new one.

Alternator checked out OK.

Got in the thing this morning--and the new battery was completely dead. There wasn't any lights left on; no doors left ajar--and I don't think that even...

fastsaf2006-07-05T16:23:16Z

Check for a short somewhere on the vehicle. A radio, speaker wire, or other accessory that may have been added before the problem started. I had a battery going down all the time and because I didn't drive that particular vehicle at night very often I found that a vanity light on sun visor mirror was left on full time and was draining the battery.

?2016-03-18T07:47:34Z

It could possibly cause damage to the battery. A battery that is left uncharged could cause corrosion inside the battery itself, The cells could run dry and the lead plates inside the battery could start to deteriorate, this would make the battery useless. It happens more in hot weather, but it does happen in cold too. The best thing to do is keep the battery fully charged. If its not going to be used for long periods of time, I recommend putting it on a trickle charger. One that will put a small charge just to keep the battery if full charge without the possibility of it over charging it.

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