Product Overview: The HCW-L30A is a robust and versatile battery charging control module designed to automate the charging process for various battery types (including Lithium-ion and Lead-acid). It features a clear LCD display that visualizes voltage, charging percentage, and charging time in real-time. Equipped with a high-power 30A relay, this module ensures safe and efficient charging by automatically cutting off power when the battery is fully charged, preventing overcharging and extending battery life.

Key Features:

• Automatic Charge Control: Automatically connects the charger when battery voltage is low and disconnects when fully charged based on your custom settings.

• High Current Capacity: Features a heavy-duty 30A Relay (SLA-05VDC-SL-A) capable of handling high-current charging setups.

• LCD Information Display: A bright, backlit LCD screen clearly shows battery voltage, charging percentage (%), and charging time.

• Wide Voltage Compatibility: Suitable for batteries ranging from 6V to 60V.

• UART Serial Support: Includes RX/TX pins for serial communication, allowing for advanced monitoring and data logging.

• Programmable Settings: Easy-to-use "SET", "UP", and "DOWN" buttons allow you to configure upper and lower voltage limits.

Technical Specifications:

• Model: HCW-L30A

• Control Voltage Range: DC 6V - 60V

• Control Current: Max 30A

• Control Accuracy: 0.1V

• Output Type: Direct Output

• Physical Dimensions: Approx. 92mm x 45mm

• Mounting: 4x Corner mounting holes

Interface Description (Back Terminals):

• CH+ / CH- : Input terminals for the Charger (Power Supply).

• BT+ / BT- : Connection terminals for the Battery.

• RX / TX / GND: Serial communication interface for TTL level data transfer.

Applications:

• Solar power charging systems

• Car and E-bike battery charging

• DIY Power supply/UPS builds

• Battery protection and maintenance

How It Works: The module acts as a smart switch between your charger and battery. You set a Lower Limit Voltage (dn) and an Upper Limit Voltage (UP).

1. When battery voltage drops to the "dn" limit, the relay closes, and charging begins.

2. When battery voltage reaches the "UP" limit, the relay opens, and charging stops.

What's in the Box:

• 1x HCW-L30A Battery Charging Control Module