User Manual

Table Of Contents

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: 45 W or 65 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

• 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. Your computer might support 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.

Note: Some models may not ship with ac adapters and 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

https://

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 4) 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.

L14 Gen 3 and L15 Gen 3 User Guide