Charge the computer

Use ac power

Power source of the ac power adapter:
  • Power:
    • Intel models:

      • ThinkPad T14 Gen 4: 45W or 65W

      • ThinkPad P14s Gen 4: 65W or 100W

      • ThinkPad T16 Gen 2: 45W, 65W, or 135W

      • ThinkPad P16s Gen 2: 65W, 100W, or 135W

    • AMD models:

      • ThinkPad T14 Gen 4: 45W or 65W

      • ThinkPad P14s Gen 4: 65W

      • ThinkPad T16 Gen 2 and ThinkPad P16s Gen 2: 65W or 100W

  • 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 (Intel models):

    • ThinkPad T14 Gen 4 and ThinkPad P14s Gen 4: 20 V dc, 2.25A, 3.25A, or 5A

    • ThinkPad T16 Gen 2 and ThinkPad P16s Gen 2: 20 V dc, 2.25A, 3.25A, 5A, or 6.75A

  • Output rating of the ac power adapter (AMD models):

    • ThinkPad T14 Gen 4 and ThinkPad P14s Gen 4: 20 V dc, 2.25A, or 3.25A

    • ThinkPad T16 Gen 2 and ThinkPad P16s Gen 2: 20 V dc, 3.25A, or 5A

When the battery power is low, charge your battery by connecting your computer to ac power with the supplied power adapter. Selected models 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 might 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 https://www.lenovo.com/us/en/compliance/eu-doc.

Charge the computer

Maximize the life of the battery

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.

  • Keep the battery from full charge when it is not in heavy use. For more information, refer to the Battery settings tab in the power section of the Vantage app.

  • The battery might optimize its full charge capacity based on your usage. After prolonged periods of limited use, full battery capacity might 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 the battery life, you can lower the display brightness of the computer display or turn off wireless feature when not in use.

Use P-to-P 2.0 (Peer to Peer 2.0) charging function

The USB-C connectors 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.

  2. Click Config > USB, and then to enable Always On USB and Charge in Battery Mode.


P-to-P 2.0 charging function

Note: The actual charging speed of your computer depends on many factors, such as the remaining battery power of the computers, the wattage of the ac power adapter, and whether you are using the computers.
Parent topic: Manage power

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