A1 PRO User Manual
Copyright © 2020 Unitree Robotics. All Rights Reserved 13
state, press the power switch once, then press the power switch for more than 2 seconds to turn off
battery. When the battery is turned off, the indicators are off. After shutting down, please adjust the size
of the robot's size legs and hips according to the requirements in the "Preparation before starting"
section, and prepare for the next boot.
After shutting down, please adjust the size of the robot's size legs and hips according to the
requirements in the "Preparation before starting" section, and prepare for the next boot.
Battery Pack
Introduction
The battery pack is designed for the A1 with a capacity of 4200 mAh and a voltage of 21.6 V with charge
and discharge management. The battery pack features a high-performance battery and uses the
advanced battery management system developed by Unitree to provide sufficient power for the A1. The
battery pack must be recharged using a dedicated charger from Unitree.
Battery Pack Function
The battery pack has the following features：
1.Battery Display: The battery has its own battery indicator, which can display the current battery level.
2.Battery Storage Self-discharge Protection: When the power of battery is higher than 65% After 10 days
without any operation, the battery can start self-discharge to 65% to protect the battery. Each
self-discharge process lasts for about 1 hour. There is no LED light indication during discharge, and
there may be slight heat, which is normal.
3.Balanced Charge Protection: Automatically balance the internal battery voltage of the battery to
protect the battery.
4.Overcharge Protection: Overcharging can seriously damage the battery, our battery can automatically
stop charging when it is fully charged.
5.Charging Temperature Protection: Charging will damage the battery when the battery temperature is
The step of shut down will be described in the "Joystick Operation" section.
Please pay attention to Unitree's official website - service and support - technical support -
firmware update or contact Unitree staff. We will develop a one-button shutdown function as
soon as possible, and upload the firmware. At that time, the customer can update the
firmware to make the robot have a one-button shutdown function.
Be sure to fully charge the battery before using it for the first time.
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