Unitree H1/H1-2 Battery

Description

Battery Specifications

The battery for the Unitree H1 and H1-2 has the following key specifications:

Capacity: 15 Ah (ampere-hours) or 0.864 kWh (kilowatt-hours)
Maximum Voltage: 67.2 V
Rated Voltage: 28.8 V
Weight: Approximately 5 kg
Dimensions: 120 × 80 × 182 mm

Battery Life and Charging

The battery life and charging characteristics are designed to balance performance and operational time.

Runtime: The battery provides an operating time of 2 to 4 hours, depending on the robot’s activity and workload. This can be influenced by factors like walking speed, terrain, and the use of its various features.
Charging: The H1-2 battery supports fast charging with a current of 9 A. With its fast charger, the standard battery charging time is approximately 0.8 hours, while a long-range battery can take up to 1.5 hours.

Safety and Management

The Unitree H1’s battery incorporates a sophisticated, self-developed Battery Management System (BMS). This system is crucial for ensuring the battery’s longevity and the robot’s safe operation. The BMS provides several protective features, including:

Overcharge and Over-discharge Protection: Prevents damage from over-voltage or running the battery down too low.
Short Circuit Protection: Automatically shuts off the power in case of a short circuit.
Temperature Protection: Monitors the battery temperature to prevent charging or discharging in unsafe conditions.
Balanced Charging: Ensures that all cells within the battery are charged evenly.
Self-discharge Protection: The battery can automatically discharge to a safer storage level (around 65%) if it remains unused for an extended period, which helps preserve its health over time.