Checking the battery pack
Battery charging does not start until the Power Meter
shows that less than 95% of the total power remains;
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.
Toensure a maximum battery charge continue charging
the battery for about 30 minutes after the charge indicator
reaches 100%.
Tocheck 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. Toget
detailed information about the battery,double-click the
Power Meter icon.
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.
Tocheck 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:
Terminal Voltage (V dc)
1 +0 to + 16.8
5 Ground(−)
3. If the voltage is less than +11.0V 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 +11.0V dc after
recharging, replace the battery.
4. If the voltage is more than +11.0V 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.
Checkoutguide
30 ThinkPad TransNote