Having problems with your IBM ThinkPad R40 2681 ?

My battery is not recognised and doesn't charge

\015 It does not charge when we turn it on. the laptop does not recognise the battery. shuts down after about 30 min when we turn in on.\015

Answers :

Check the battery status manually
\015\012
\015\012To accurately measure the condition of the battery, the PC cannot be used during this test. This method will Test the battery by completely charging the battery then will determine how long it takes to discharge the battery. This test is done while the PC is operating in the Safe Mode and not being used for any other action. \015\012This test will require 1-3 hours depending on condition of the notebook PC. The PC cannot be used while you perform the following steps. Completing all the following steps will also calibrate the battery so that the power meter reading are accurate. \015\012\015\012
    \015\012
  1. \015\012Connect the AC adapter and allow the notebook to charge until the battery is charged to 99% - 100% of capacity. \015\012
      \015\012
    • \015\012To determine the percentage of battery power, with the notebook operating normally, right-click on the c00586951.jpgpower icon in the system tray, and select Open power meter . The Power Status is displayed.
    \015\012
  2. \015\012Shut down the notebook PC when the battery has charged to capacity.\015\012
  3. \015\012With the notebook turned off, connect the notebook PC to the AC power adapter that is plugged into a working wall outlet.\015\012
  4. \015\012Press and release the Power Button to start the computer. \015\012
  5. \015\012Press the F8 key several times when the HP Logo displays. \015\012
  6. \015\012When the Windows Advanced Startup Menu displays, select the Startup in Safe Mode option. \015\012
  7. \015\012Notice and record the current time as the Test Start Time with a fully charged battery.\015\012
  8. \015\012Remove the AC power adapter cable from the notebook PC.\015\012
  9. \015\012Allow the battery to discharge completely until the notebook PC turns off.\015\012
  10. \015\012Notice and record the Completely Discharged Time.\015\012
  11. \015\012Subtract the Discharged Time from the Start Time to calculate the Elapsed time.\015\012
  12. \015\012Record the time for future comparison or to provide to an HP support specialist if you suspect the battery is defective. \015\012\015\012\015\012\015\012\015\012\015\012\015\012NOTE: \015\012As with all batteries, the maximum capacity of this battery will decrease with time or use. Loss of battery capacity will vary depending on the product configuration and usage, including but not limited to: product model, applications running, power management settings, and product features.The battery warranty does not cover natural deterioration of battery capacity. Your battery is only warranted from defects in materials or workmanship resulting in failure.To determine if your battery has had a warranted failure you may be required to run an HP diagnostic.
\015\012After performing these steps.
\015\012
\015\012
\015\012--- Remove the batter and power cord
\015\012---After 5-10 mintues insert the batteryu and comment the AC Adapter and then Press the power button on the notebook for about 5 minutes .
\015\012If there is any power issue the issue may fix.
\015\012
Repair Help & Product Troubleshooting for IBM ThinkPad R40 2681

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