Hi My Dell Inspiron 640 m has the following problems: The battery don't charge is always at 25%. When I try to turn on the pc only with the ac power, without battery the pc doesn't start. With the battery and AC power the pc start. I think the AC power work because the battery (with the ac power connected) is alway at 25% thank you

Hi Anonymous,

Request you to try following the below steps which might help:

(1)Check if the AC Adaptor gets detected in BIOS (F2 at startup).
(2)Check on the status bar for any messages like "Plugged in charging", "Not connected", etc.
(3)Try using a known good AC Adaptor and check if that helps.

Thanks and Regards.
Kiran Kumar.
#iworkfordell.

Dear Mathew,

You should you Dell Utility and it has the function called Dell Battery Metter, it can enable or disable charging

Try the following steps to solve it:
it of googling on the web and finally found the solution here.1 Turn off laptop.2 Unplug AC power.3 Remove battery.4 Replace AC power.5 Turn on laptop, allow OS to boot.6 Once logged in to the machine, perform a normal shut down.7 Unplug AC power.8 Replace battery.9 Replace AC power.10 Turn on laptop, allow OS to boot. The battery should once again be charging as normal.If it can't still resolve this problem, try a new laptop charger or repair your laptop dc jack.

If you plan to be on a budget for your dell 1525, you may try the following third party charger:

Replacement Dell Inspiron 1525 AC Adapter 65Watt 19.5V 3.34A

Dell has a series of tests for a system's hardware called the PSA+ Diagnostics. You can run these tests by performing one of the following actions:

• Hold down the key while pressing the power button.
• Turn on the system, press at the initial Dell™ logo screen, and select Diagnostics from the boot menu.
• Disconnect the AC power and remove the battery. While holding down the power button, insert the AC connector into the back of the system. The system then starts and the message Diagnostic boot selected displays. The system then launches the PSA+ Diagnostics.
• As for the laptop shutting down, that usually indicates your CPU (Central Processing Chip) is overheating. This is caused by dust or defective CPU fan or heat-sink.

I am glad to HELP YOU!

The problem that are you describing here occurs many times - even for the BRAND NEW laptops!
The RAPID DRAINAGE of the batteries can have multiple causes:
# a defective battery
# the humidity of the storage place
# a bad connector
and so on.
What I'd suggest you is to take back your machine to the store and to ask for a BATTERY REPLACEMENT. I assume that if you said you've bought your Dell 25 days ago it should be under some WARRANTY CONDITIONS...
The next battery you will gt do like this:
# attach the battery into its slot
# make sure your Dell machine is OFF
# connect the AC power supply into the wall plug
# with the machine still OFF let the battery fully charge for AT LEAST 16 HOURS.

My best regards!
... and don't forget to RATE, please...
*******************************************
useful WINDOWS TIPS!

Try the following method:

1. Remove the battery from your laptop and plug-in the AC Adapter. Check if it is working.
If not - The AC Adapter is not working properly
If Yes - The battery is the problem. Change the battery

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You can visit DELL website:
http://accessories.us.dell.com/sna/batteryconfig.aspx?c=us&l=en&s=bsd&cs=04

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Thanks. Please rate. God bless!
Let me know if you need further assistance.

Troubleshooting a power problem is fairly simple:
1 Try a different AC adapter, see if there is any change 2 If system will not power on with a known good or new AC adapter, then the power connection on the motherboard is likely damaged and the motherboard will need to be replaced.

Hi,
As a first step, Try reseating the battery on the laptop and see if the problem is resolved.
If not working, then try flashing the BIOS on the laptop.
You can find the latest BIOS for your system in the support.dell.com website.
1. GO to support.dell.com
2. Click on "Drivers & Downloads"
3. Either select your System model or enter your the service tag of the computer.
4. Under the "BIOS" section., you will find an option to download the BIOS.
5. Save it to your system., and just double click it, to install.

-> Make sure that the system is not turned off while Updating the BIOS...

Have a nice day

the battery has to be fully charged and the ac adapter in on that one.

Hi there
Take the battery out and start the laptop up on AC power only, set the correct date, time and time zone, shut down the PC and remove the power jack, wait about 30 seconds then power it up on AC only again, If the date and time has changed the the cmos battery has run out and needs replacing. If it keeps date and time the problem is the battery or the powerboard controller that charges the battery is defective. If the battery is getting a charge, run the battery completely out of charge, then try to charge it again.

Good luck and thanks for using Fixya!!