Manage Power; Check The Battery Status; Charge The Computer - Lenovo 21DC003YCA User Manual

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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.

Go to Settings ➙ System to check the battery status. For more details about your battery, refer to the

Vantage app.

Use ac power

Power source of the ac power adapter:

• Power: 135W, 170W, or 230W (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

• Output rating of the ac power adapter: 20 V dc, 6.75 A, 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.

Note: Some models may not ship with ac adapter and power cord. 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.

• Lenovo provides you with an estimate of how much battery life you might expect from your computer

based on the battery life test under specific benchmark. The actual amount of battery life varies

significantly depending on your computer settings, usage, configuration and other factors. To maximize

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