Checkout guide
of its capacity. This protects the battery pack from being overcharged or from having a shortened life.
To check the status of your battery, move your cursor to the Power Meter icon in the icon tray of the Windows taskbar and wait for a moment (but do not click), and the percentage of battery power remaining is displayed. To get detailed information about the battery,
Note: If the battery pack becomes hot, it may not be able to charge. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.
To check the battery pack, do the following:
1.Power off the computer.
2.Remove the battery pack and measure the voltage between battery terminals 1 (+) and 5 (−). See the following figure:
1(+) 2
3
4
Terminal Voltage (V dc)
1 | + 0 to + 16.8 |
|
|
5 | Ground (−) |
3.If the voltage is less than +14.4 V dc, the battery pack has been discharged.
Note: Recharging will take at least 3 hours, even if the indicator does not turn on.
If the voltage is still less than +14.4 V dc after recharging, replace the battery.
4.If the voltage is more than +14.4 V dc, measure the resistance between battery terminals 4 and 5. The resistance must be 4 to 30 K .
If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.
Checking the backup battery
Do the following:
1.Power off the computer, and unplug the ac adapter from it.
2.Turn the computer upside down.
3.Remove the battery pack (see “1010 Battery pack” on page 73).
4.Remove the backup battery (see “Checking the battery pack” on page 41).
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