Manage Power; Check The Battery Status; Charge The Computer - Lenovo ThinkPad X1 Extreme Gen 4 User Manual

Manage power

Use the information in this section to achieve the best balance between performance and power efficiency.

Check the battery status

Click the battery icon in the Windows notification area to check the battery status, view the current power
plan, change the power mode, and access battery settings quickly. For more details about your battery, refer
to the Vantage app.

Charge the computer

Use ac power
Power source of the ac power adapter:
• Power: 135 W, 170 W or 230 W (depending on the model)
• Sine-wave input at 50 Hz to 60 Hz
• Input rating of the ac power adapter: 100 V to 240 V ac, 50 Hz to 60 Hz
When the battery power is low, charge your battery by connecting your computer to ac power. The battery is
80% charged in about one hour when the computer is turned off. The actual charging time depends on the
battery size, the physical environment, and whether you are using the computer.
Notes: To maximize the life of the battery:
• Use the battery until the charge is depleted and recharge the battery completely before using it. Once the
battery is fully charged, it must discharge to 94% or lower before it will be allowed to recharge again.
• The battery may optimize its full charge capacity based on your usage. After prolonged periods of limited
use, full battery capacity may not be available until you discharge to as low as 20% and recharge
completely. For more information, refer to the power section of the Vantage app.
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ThinkPad X1 Extreme Gen 4 / P1 Gen 4 User Guide