Check The Battery Status; Charge The Computer - Lenovo ThinkPad X13 Gen 4 User Manual
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Check the battery status
Go to Settings ➙ System to check the battery status. 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: 45 W or 65 W
• 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
• Output rating of the ac power adapter: 20 V dc, 2.25 A or 3.25 A
When the battery power is low, charge your battery by connecting your computer to ac power with the
supplied power adapter. The 65 W ac power adapter supports the rapid charge function, 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.
Battery charging is also affected by its temperature. The recommended temperature range for charging the
battery is between 10°C (50°F) and 35°C (95°F).
Note: Some models may not ship with ac adapters or power cords. Use only the certified adapters and
power cords provided by Lenovo that comply with the requirements of relevant national standards to charge
the product. It is recommended to use the Lenovo qualified adapters. You can refer to
www.lenovo.com/us/en/compliance/eu-doc
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.
Use P-to-P 2.0 (Peer to Peer 2.0) charging function
Both USB-C (Thunderbolt 3) connectors on the computer feature the Lenovo-unique P-to-P 2.0 charging
function. To use the function, ensure that Always On USB and Charge in Battery Mode are enabled in UEFI
BIOS of your computers, so that the function works even when the computers are off or in hibernation mode.
To enable Always On USB and Charge in Battery Mode:
1. Press F1 to enter the UEFI BIOS menu.
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Chapter 3
Explore your computer
29
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