Lenovo ThinkPad Tablet – How to check the internal battery pack status – how to check the Ac Adapter

Lenovo ThinkPad Tablet:  Checking the internal battery
When you use the internal battery but the tablet fails, see the instructions in this topic to check the internal battery.
To check the internal battery, do the following:
1. Turn off the tablet.
2. Replace the internal battery with another battery.
3. Check that power is supplied when you turn on the tablet.
If you can turn on the tablet, replace the internal battery.

Checking the internal battery condition
After you have used the tablet for a long time, check the internal battery condition and determine if the
battery shall be replaced with a new one.
To check the internal battery condition, do the following:
1. Open the Android Settings screen.
To open the Android Settings screen, do either of the following:
From the main Home screen, touch the Android Settings icon on Lenovo Launch Zone. The Android Settings screen is displayed.

Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.
2. Touch About tablet.
3. Touch Status > Battery Condition. One of the following conditions might be displayed:
Good
Fair
Poor
If the condition is Fair or Poor, replace the internal battery.
Checking the ThinkPad Tablet AC Charger
When you use the ThinkPad Tablet AC Charger to charge the tablet but no power is charged, see the instructions in this topic to check the ThinkPad Tablet AC Charger.
To check the ThinkPad Tablet AC Charger, do the following:
1. Disconnect the micro-USB cable from the tablet.
2. Measure the output voltage across the connector marked B of the micro-USB cable. Refer to the following figure:

Note: The output voltage across pin 3 of the micro-B connector might be different from the one you are

servicing.
3. If the voltage is not correct, replace the micro-USB cable.
4. If the voltage is acceptable, replace the system board.
Checking the internal battery status
To check the battery status of the tablet, do either of the following:
Approximate information about the battery status
Get the approximate status of the battery at any time by checking the battery status icon on the system bar in the lower-right corner of the screen. The shorter the blue bar is, the less the battery power remains.
Accurate information about the battery status
To get the accurate information about the battery status of the tablet, do the following:
1. Open the Android Settings screen.
To open the Android Settings screen, do either of the following:
From the main Home screen, touch the Android Settings icon on Lenovo Launch Zone. The Android Settings screen is displayed.
Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.
2. Touch About tablet on the Android Settings screen.
3. Touch Status to view the accurate percentage of the remaining battery power. You also can touch
Battery use to check what applications are consuming battery power.

Changing the password, PIN, or pattern
To change a password, PIN, or pattern, do the following:
1. Open the Android Settings screen.
To open the Android Settings screen, do either of the following:
From the main Home screen, touch the Android Settings icon on Lenovo Launch Zone. The Android Settings screen is displayed.
Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.
2. Touch Location & Security > Configure lock screen.
3. Touch the screen unlock mode you have set and type the password or PIN, or draw the pattern. Then touch OK.

4. Type your new password or PIN, or draw a new pattern. Confirm it by typing or drawing it for a second time.
5. Touch OK to save your change.