Tom's Hardware > Forum > CPU & Components > Other Components > Battery Capacity
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spork985   09-10-2008 at 03:24:01 AM

This is the third battery I've tried, it lasts about 50 minutes in my hp dv9000t notebook.

Now I just installed Ubuntu and I see this
http://upload.zantherus.com/files/ladhqsfe5z68s5qic5p5.png

How can I make it charge to the full capacity???

Thanks!!

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Richie_W   09-10-2008 at 06:13:08 AM
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You can't. Everytime you charge an Lithium ion battery it loses a tiny bit of capacity - Over time the battery will become less and less efficient in storing energy. I'm guessing you've had the battery a while?

You're options are to either buy a new battery, keep the laptop plugged in, or buy a new laptop (obviously with a new battery).

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Richie_W   09-10-2008 at 06:15:25 AM
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Richie_W wrote :

You can't. Everytime you charge an Lithium ion battery it loses a tiny bit of capacity - Over time the battery will become less and less efficient in storing energy. I'm guessing you've had the battery a while?

Your options are to either buy a new battery, keep the laptop plugged in, or buy a new laptop (obviously with a new battery).


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cjl   09-10-2008 at 07:43:51 AM
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Did you buy it used? Old batteries lose capacity over time - all you can do is get a new battery. Of course, if that's a new battery, something is seriously wrong.

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spork985   09-10-2008 at 02:22:09 PM
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It's brand new! I just got it and had two before it that had the same problem.

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Message edited by spork985 on 09-10-2008 at 02:26:15 PM
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spork985   09-10-2008 at 07:23:48 PM
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Where can I get one of these Li-Ion calibration programs I keep reading about? There is none in my bios.

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Richie_W   09-10-2008 at 07:57:12 PM
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spork985 wrote :

It's brand new! I just got it and had two before it that had the same problem.



I sounds like a hardware fault else where. Perhaps a dodgy power supply connection isn't providing sufficient juice to charge the battery? I don't know, but it is VERY unlikely to receive 3 defective batteries - unless it was a bad batch.

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spork985   09-10-2008 at 10:05:12 PM
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Richie_W wrote :

I sounds like a hardware fault else where. Perhaps a dodgy power supply connection isn't providing sufficient juice to charge the battery? I don't know, but it is VERY unlikely to receive 3 defective batteries - unless it was a bad batch.


By power supply, are you referring to the external transformer or something inside the laptop itself?

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Richie_W   09-10-2008 at 10:30:07 PM
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Either. It is hard to say.

Try taking out the battery, plugging the laptop in to the mains and turning it on. Does it work?

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spork985   09-10-2008 at 11:49:38 PM
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Richie_W wrote :

Either. It is hard to say.

Try taking out the battery, plugging the laptop in to the mains and turning it on. Does it work?



Yup, works fine. I don't like using it this way though because the battery acts as an UPS.

*puts back in

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zanasil   10-18-2008 at 06:15:57 AM
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Hi spork985,
Try to fully discharge your hp dv9000t laptop battery and then charge it with an Ac adapter.
More info available at : http://www.power-batteries.net/notebook/hp.html
there you could find some helpful tips for hp laptop battery.
Good luck!

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