Battery of a laptop not charging

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I have a Dell Latitude D520 Laptop and it were all ok with it till last week,and now it's battery is not getting charged.The battery contact point with the computer gives only 3.29-3.30 DC Volt to charge tha battery.the battery icon is blinking read and green what is the matter and how can I find a solution for this?

The battery meter is showing 0% of charge

BIOS showing AC Adoptor :Unknown device installed what is the problem

Kindly help me

1 reply


This may be the adapter connector / adapter pin or even the battery itself ,you need to test it with new adapter and battery before replacing with new one.