Quick Start
===========

Startup Procedure
-----------------

Step 1: Pre-start Checks
~~~~~~~~~~~~~~~~~~~~~~~~~

Before powering on, suspend or securely support the **H2** using a suitable support frame, with its front facing
forward. Ensure the surrounding area is clear of people and obstacles, and arrange the arms and legs in a
natural, untangled posture.

.. warning::

   The H2 is a full-size humanoid and cannot actively maintain balance until it has entered motion-control mode.
   Keep it supported and keep all personnel clear during startup.

Step 2: Install the Battery
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Insert the smart battery into its compartment until the latch engages with a clear *click*. Confirm the pack is
fully seated and secured. **Do not force** the battery — if it does not seat smoothly, remove it and check the
orientation.

Step 3: Power On
~~~~~~~~~~~~~~~~

Power on the battery using the standard Unitree sequence:

1. Briefly press the battery power button once.
2. Press and hold the button for **more than 2 seconds** to turn the battery on.

Wait approximately **one minute** for the robot to complete initialization and enter its zero-torque / damping
state. Keep the environment unobstructed during this process.

Step 4: Stand and Operate
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Using the remote controller, bring the H2 into its standing-preparation posture while firmly supporting it.
Lower it until its feet make stable contact with the ground, then switch into motion-control mode. Verify the
robot is balancing stably before releasing support or issuing movement commands.

.. note::

   Exact controller key combinations depend on the firmware build shipped with your unit. Refer to the
   controller reference supplied with the robot and the official
   `Unitree H2 documentation <https://support.unitree.com/home/en/H2_developer>`_ for the current key map.

Emergency Stop
--------------

If the H2 enters an abnormal or unsafe state, trigger the **emergency stop** — either via the physical E-stop or
the controller stop combination. The robot will switch to a damping/protective mode and lower itself toward the
ground in a controlled manner.

.. important::

   Always know the location of the emergency stop before operating the robot, and keep it within reach
   throughout operation.

Shutdown Procedure
==================

1. Move the H2 to an open, level area with adequate clearance, keeping it supported.
2. Command the robot into its standing-preparation / resting posture using the controller.
3. Engage zero-torque / damping mode so the joints relax safely.
4. Briefly press the battery power button, then press and hold for **more than 2 seconds** to power down.

After shutdown, if the robot will be unused for an extended period, remove the battery pack for safe storage.

.. attention::

   Keep hands and clothing clear of the joints during all posture transitions to avoid pinch injuries.