Batteri is dead and the fan is out of control

My batteri isnt charging (its dead, can make it without AC for 3min) and after 2 min of using the computer the fan goes from 1500rpm to 6200rpm. Ist because the batteri isnt working as i should or is the problem something else that make the fan go out of control?

.. but without AC the computer work just for some minutes.
If i remove the AC-cable and then check the battery status, it look like this:
Batteri:
Timer för systemvila (minuter): 5
Timer för hårddiskvila (minuter): 10
Timer för bildskärmsvila (minuter): 1
Vakna vid strömförändring: Nej
Vakna när locket öppnas: Ja
Skärmen tonas ned vid vila: Ja
Reducera ljusstyrkan: Ja
Batteriinformation:
Batteri installerat: Ja
Första varningen om låg nivå: Nej
Full laddning (mAh): 2836
Återstående laddning (mAh): 2769
Ampertal (mA): -14
Volttal (mV): 12430
Cykelantal: 187
What is an Archive & Install?

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