Checkout guide
under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.
To check 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.Turn off the computer.
2.Remove the battery pack and measure the voltage between battery terminals 1 (+) and 5 (−). See the following figure:
4 3 2 1(+)
Terminal Voltage (V dc)
1 | + 0 to + 12.6 |
|
|
5 | Ground (−) |
3.If the voltage is less than +11.0 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 +11.0 V dc after recharging, replace the battery.
4.If the voltage is more than +11.0 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.Turn 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 76).
General descriptions 43
