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 Post subject: Laptop Replacement Battery will not charge
PostPosted: Tue May 07, 2013 2:18 am 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1035
I am working on a Dell Inspiron 6400 laptop computer that I ordered and installed a replacement battery for. Its original 6-cell lithium-ion battery had become useless as it was depleted and was not even recognized by the laptop's BIOS nor in Windows XP. The new battery is seen by both the BIOS and in Windows XP and only shows as being 45% charged (it origninally showed as being 46-50% charged when I first installed it and booted the laptop) regardless of it having the laptop's AC adapter/charger plugged into it for any length of time. The green LED power light on the AC adapter/charger is lit and the laptop shows as being on AC power when it is plugged into the laptop, but the AC adapter shows as being an unknown power source in the BIOS. Is the laptop's AC adapter/charger defective and in need of replacement or is there a problem with the laptop's motherboard? Thanks in advance for any and all helpful replies.


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 Post subject: Re: Laptop Replacement Battery will not charge
PostPosted: Tue May 07, 2013 5:25 am 
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Joined: Sun Sep 26, 2004 9:26 am
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Location: Dixon Springs, TN
Every laptop I've ever owned (except for the netbook) I could remove the battery, plug in the power supply and run the computer. Give that a try. If the computer runs then the PSU is good and the battery is suspect.


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 Post subject: Re: Laptop Replacement Battery will not charge
PostPosted: Tue May 07, 2013 7:53 am 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1035
dedgar, the computer ran fine without the battery in it and with the adapter/charger plugged in when I first received it from its owner. However, the plug that goes into the laptop's external power port tends to be loose and will tend to be loose enough to cause the laptop to lose power whether the original battery is in it or not. This is why I am thinking that the problem may be with the adapter/charger in the laptop.


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 Post subject: Re: Laptop Replacement Battery will not charge
PostPosted: Tue May 07, 2013 10:27 am 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1035
Well, I think I have found my answer: In the laptop's BIOS, there is a section near the bottom titled "POST Behavior". If you navigate down to it (using the arrow keys on the keyboard) and hit "Enter", there is a subcategory titled "Adapter Warnings". When you navigate to it and hit "Enter", you will see the "Adapter Warnings" field and it states that it lets you choose whether the BIOS displays warning messages when you use certain power adapters. It also states that the BIOS displays these messages if you attempt to use a power adapter that has too little capacity for your configuration. When I set this field to "Enabled" (which should be the default) and hit "Esc" to exit the BIOS, I receive the following message:

"The AC power adapter type cannot be determined. Your system will operate slower and the battery will not charge.

Please connect a Dell 65W AC adapter or higher for best system operation. To resolve this issue, try to reseat the power adapter. Strike the F3 key (before the F1 or F2 key) if you do not want to see power warning messages again.

Strike the F1 key to continue, F2 to run the setup utility. Press F5 to run onboard diagnostics."

It appears as though the AC power adapter is faulty, not the new battery. I have already ordered a new AC adapter. I will post back with the results later.


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 Post subject: Re: Laptop Replacement Battery will not charge
PostPosted: Thu May 09, 2013 3:21 am 
Willamette
Willamette

Joined: Thu Aug 12, 2004 9:04 am
Posts: 1035
It turns out that, after talking to the owner of the laptop, the AC adapter was not the one that came with this computer, but was one that was given to him after the other one was either lost or quit functioning. This adapter was not meant for this laptop, so I have ordered an exact replacement for it.


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 Post subject: Re: Laptop Replacement Battery will not charge
PostPosted: Thu May 09, 2013 5:34 am 
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Having the correct charger does help. :lol:


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