XH-M602 battery cell charging control module, adjustable charger

XH-M602 charging control module

The XH-M602 module is an advanced battery charging controller powered at 220V. The device offers a wide operating voltage range from 0V to 120V with high precision and a tolerance of about 0.1V. Its compact size and low weight make the module very practical to install and use daily. It works well in backup power systems and electronic projects, including with Arduino, Raspberry Pi, ESP8266, and ESP32.

Supported battery types

The controller is universal and works with many cell types. The module supports, among others, batteries:

• Li-Po
• Li-Fe
• Li-Ion
• Gel

Operating principle and use

The main task of the circuit is automatic management of the charging process. When the battery voltage drops below the set minimum, the module automatically starts the connected charger. When the set maximum voltage is reached, the controller switches it off, effectively protecting the cells from dangerous overcharging. Note: The XH-M602 module does not charge batteries by itself; it only controls an external charger.

Device configuration is intuitive. The circuit allows smooth voltage adjustment from 0.0V to 120V. Parameters are changed by holding the appropriate buttons on the board: the left for the minimum value and the right for the maximum value.

Key technical specifications

• Supply voltage: 220V
• Operating voltage range: 0-120V
• Voltage measurement tolerance: approximately 0.1V
• DC voltage for batteries: 0-120V
• Physical dimensions: 58 x 86 x 27 mm
• Total weight: 114.81 g

Example applications

• Automatic battery charging stations in home workshops
• Backup power and voltage hold-up systems
• Energy management in small solar installations
• Electronic projects and robotics requiring reliable power
• Protection of cell packs from deep discharge or overcharging

Benefits of using the module

• Extended cell life - precise control prevents battery degradation
• Full automation - hands-free charging after one-time configuration
• Versatility - a wide voltage range supports various packs
• Safety - effective protection against overcharging and equipment damage
• Ease of use - simple adjustment with two buttons