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Dell latitude Battery problems

Posted on 2004-09-16
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hi
i have a dell latitude c600. The battery is giving me alot of problems. i bought a new battery. fully charged it, and after using it for 10 minutes it drained completely.

What is wrong with my system? and how can i fix it? i read somewhere it might be the bios, i did a bios upgrade to the a23
still no help.

please help.
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Question by:jkoshy18
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by:icedrop-dcse
ID: 12080746
using a new battery and updated your bios from the website already. you might have a mobo problem in there. first try changing the settings on the os to use minimum battery power. but 10 mins is extreme if youre on full battery. my tip would be to call in or post your service tag so that we could see your service contract status. maybe you can have the mobo replaced.
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by:FatherErvin
ID: 12083796
Check the Dell website for a Battery Controller update. If they have one, apply it.

Try conditioning the battery. Charge it for 2hrs and then run it on battery until it goes into hibernation. Repeat these steps 3-4 times to see if their is any improvement.

If not, I would contact Dell as the charging circut or AC adapter is no good. (sometimes the adapter can run the laptop but not charge the batter)

Cheers,

fE
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by:rid
ID: 12084244
Draining a battery in 10 minutes is more or less impossible without causing a severe overheating or even a fire. Either the battery is bad from start or the measuring circuitry is messed up. Does this battery have a charge indicator on it? What does it say after  you charge it?
/RID
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by:FatherErvin
ID: 12084408
It is not impossible to drain a battery in 10 minutes or less... and their wont be a fire.... whats happening here is that the battery isn't actually charging properly. These lithium batteries are smart batteries and retain a memory. You need to condition them.. .DRAIN COMPLELETLY, CHARGE FULL, DRAIN COMPLETELY CHARGE FULL. After about 4 tries, if there is no improvement, it is either the battery (unlikely as this is the second one), the charging circut or the AC adapter (enough juice to run the laptop but not charrge the battery).

fE
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by:rid
ID: 12085587
A fully charged battery providing a 45 Wh energy reservoir discharging in 10 minutes would have an output of like 400 W during that time. The battery is bad or the metering circuitry is bad.
/RID
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by:icedrop-dcse
ID: 12087446
if the laptop would run on the ac adapter then that means the the "brick" is fine. also if it is a new batt and then the problem is still evident.. that only leaves one part on the loop that is the error point and that is the mobo of the system. since the circuitry in charging the battery and also measuring how much power you have are both in the mobo. call in and have your mobo replaced. or better yet.. run the dell32bit diagnostics inside your resource cd and have it check your battery and mobo.
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by:rid
ID: 12087759
I just found an interesting option on another type of laptop: A utility for recalibrating the battery meter, built into computer BIOS. Is there anything similar on your machine? A new battery may be healthy, but the metering circuitry may have a bad setting, believing the battery to be depleted while still having lots of power left. Perhaps a function like that is available in the dell diagnostics suggested by icedrop-dcse.
/RID
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by:XSINUX
ID: 12091152
J Koshy Chetta,

Your System may work with the ac adapter alone. This may not mean that the ac-adapter is perfect. It may still fail to charge the battery. The Bios A21 did have some Charging issues but that was corrected on A21 version. I am not sure if this fix is added on to your A23 Bios. Do you want to try Downgrading it to A22? Let me know. Anyways,

My suggestions is to leave the system without the ac power untill the battery completely drains out. Then try with a different ac-adapter for a couple of hours ( recommended 9 hrs ). This May help.

This we are doing to ensure that the battery Circuit caliberation is reset and should stop the Charging when the battery is Completely Charged. In this case the Circuit may raise a false alarm of having the Battery Fully charged where as it is not. So its better to have the battery completely drained before we start a Fresh Charging Cycle.

As an option , there is a Button ( greyish ) on the battery where you can press and see the charge on it. If the LEDs come on as 1 3 5 instead of 1 2 3 4 5 - The Battery is Screwed as we refer this to a Battery Memory Error.


Hope this Helps

Cheers
Sinu
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