Question about Dell Inspiron 6400 Notebook

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My Dell Inspiron 6400 laptop battery isn't charging, I think :(

I have a Dell laptop (inspiron 6400), I also have changed my battery with a new one (Type KD476 - Capacity 85Wh) but I don't think its charging. On the right side, the charge button blinks on & off, slowly .
I plugged this new battery in about 6 hrs ago, but the laptop still does not power on. Any suggestions? Would be greatly appreciated!

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  • blueeyesjust Aug 01, 2009

    Thanks for replying back....
    OMG! I didn't know a laptop would work without a battery as long as it was plugged in!
    1st its my daughters laptop. I noticed before the laptop died, it said something about a battery needing replacement. Then she told me her computer won't turn on. So after many months, I just ordered the new battery, plugged it in today, and several hrs later, tried to power it back on, 3 lights lite up then nothing. I don't know what is wrong with it.... Any suggestions? Debby

  • blueeyesjust Aug 02, 2009

    I guess it wasn't the battery afterall, I tried to power on without the battery, it wouldn't do anything but the 3 lights do light up for a minute, but nothing happens. The AC adapter when plugged in, has the green light lit, so I assume that it is working.
    I also changed the Cmos battery and still nothing. I hooked up a monitor to it, nothing. Besides the 3 lights, it appears like the laptop is dead! I don't understand why it would just die after exactly 2 yrs.

  • hmlee390 May 11, 2010

    hmmmm debby the laptop should power on even with or without the battery if the charger is plugged in ..if that is happening ok and you are just having trouble with battery operation .. then this might shed some light .. Lithium batteries have a couple of quirks .. when the computer indicates that the battery is dead they are far from being dead .. its just that you cant allow them to go lower than a certain voltage .. if the battery has been stored for a long time then it might indeed go lower than a critical voltage .. if you try to charge a very dead lithium battery then it could cause overheating or even an explosion .. to prevent that the modern changer will refuse to charge a battery that is lower than a critical value .. the charge light should flash in a special way to say something is wrong .. sometimes if you know a lot obout these batteries then you can jump start them .. just to get a little charge to overcome the critical voltage threshold .. there are even special chargers that do that but its not safe unless you are knowlegable .. .. so its possible that your new battery just spent too much time in stock before you received it .. or you might have problems other than the battery .. if your old battery did the same thing then i would worry about your charger or computer having a problem .. i guess we need a bit more information : 1. does the computer work on the charger alone (without any battery) 2. does it work with your old battery at all ..or do you get the same results as the new one .. 3. do you get the same flashing light with your old battery pluged in .. since the light keeps flashing i am assuming that the cord from the charger is ok . those break a lot right at the connector that plugs into the computer .. if that happened the light would not keep flashing .. if you know anyone with that computer you could change batteries to see if that works .. also power supplies ..(maybe at a local store that carries those) .. i happen to have the same model .. nice computer .. runs cool but its video card (intel 915 chip set) doesnt like the new "Windows 7" ... hopefully microsoft will fix that before the release date....


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Try booting without the battery installed. You probably will have no change but this eliminates the battery as a source of the problem. If it doesn't boot and you are sure that the external power supply is ok, you probably have a bad motherboard. At that point, the unit needs to be checked out by a pro or a really competent amateur.

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