User's Guide

Charge the computer
Use ac power
Note: 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.
Use P-to-P 2.0 (Peer to Peer 2.0) charging function
For Intel models, both Thunderbolt 4 connectors (USB-C) on the computer feature the Lenovo-unique P-to-P
2.0 charging function.
For AMD models, both USB-C (3.2 Gen 2) 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.
2. Click Config ➙ USB, and then to enable Always On USB and Charge in Battery Mode.
• When no ac power is available:
Note: The remaining battery power of computer A should be at least 30% and be 3% higher than that of
computer B.
• When ac power is available:
Chapter 3. Explore your computer 21