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Use the Cool and Quiet on lap feature
The Cool and Quiet on lap feature helps cool down your computer when it becomes hot. Any extended
contact with your body, even through clothing, could cause discomfort. If you prefer using your computer on
the lap, it is recommended that you enable the Cool and Quiet on lap feature in UEFI BIOS:
1. Enter the UEFI BIOS menu. See "Enter the UEFI BIOS menu" on page 33.
2. Click Config and turn on the Cool and Quiet on lap mode switch.
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
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: 170W or 230W
• 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, 8.5 A or 11.5 A
When the battery power is low, charge your battery by connecting your computer to ac power with the
supplied power adapter. 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
.
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Chapter 3
Explore your computer
23
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