XH-M603 Battery Lithium Battery Charge Control Module

XH-M603 Battery Lithium Battery Charge Control Module is an intelligent device engineered to provide automated protection and management for various rechargeable battery types, including Lithium-ion and Lead-acid systems. This module functions as a voltage-based charge cutoff switch, allowing users to precisely set the low voltage limit (start charging voltage) and the high voltage limit (stop charging voltage) via onboard pushbuttons. Therefore, it effectively prevents both under-voltage discharge (which can damage the battery) and overcharging (which reduces battery life and poses safety risks). Featuring a clear LED display for real-time voltage monitoring and easy parameter configuration, the XH-M603 dramatically simplifies the creation of reliable, stand-alone battery charging stations.

Key Features:

• Adjustable Voltage Thresholds: Users can independently configure both the charge initiation voltage and the charge termination voltage using intuitive buttons.
• Real-Time Display: An integrated, bright LED digital tube displays the current battery voltage, simplifying setup and monitoring.
• Wide Compatibility: The module supports a broad range of rechargeable battery chemistries, including 12 V, 24 V, and higher voltage Lithium and Lead-Acid packs.
• Reverse Protection: Features an input diode on the output side to prevent battery voltage from flowing back into the charging source, offering increased safety.
• Relay Isolation: Utilizes a high-current control relay to physically disconnect the charging source, ensuring zero current leakage when the charging cycle completes.

Technical Specifications:

• Control Voltage Range: 6 V to 60 V DC (The voltage of the battery being charged)
• Input Voltage (Control Power): 10 V to 30 V DC (To power the module itself)
• Voltage Control Accuracy: ±0.1 V
• Maximum Relay Current: 30 A (Capable of controlling charging currents up to this limit)
• Power Consumption (Active): ≈ 1.5 W
• Display Type: Single 3-digit LED Segment Display

Mechanical Specifications:

• Board Material: High-Quality FR4 PCB
• Mounting Holes: Four standard corner mounting holes (3.0 mm diameter) for secure installation.
• Connection Terminal: High-current screw terminals for reliable power input and battery connection.
• Adjustments: Three pushbuttons (“SET,” “UP,” “DOWN”) for programming.

Dimensions:

• Module Length: ≈ 84 mm
• Module Width: ≈ 58 mm
• Module Height: ≈ 20 mm (Including relay and terminals)
• Weight: ≈ 75 g

Pinout and Wiring:

• VIN+ / VIN-: Input power terminals (DC 10 V to 30 V) to supply power to the XH-M603 control board itself.
• BATT+ / BATT-: Output terminals that connect directly across the battery being charged (Battery voltage monitoring and relay switching point).
• Charger Positive / Charger Negative: Input terminals for the charging source (e.g., DC power supply or solar charge controller output).
• Wiring Note: Always connect the charging source in series with the BATT terminals and the battery. The BATT terminals simultaneously monitor the battery voltage and control the internal relay that switches the Charger source ON or OFF.

Datasheet Reference:

• Download XH-M603 Battery Protection Module Datasheet (Reference)

Commonly Used in:

• Solar Power Systems: Automatically managing the charge cycle for off-grid 12 V or 24 V battery banks (used secondary to the main solar controller).
• DIY Battery Chargers: Building custom power supplies or chargers for electric tools and mobility devices.
• Uninterruptible Power Supplies (UPS): Ensuring reliable deep cycle battery management in homemade backup systems.

Applications:

• Overcharge Protection: Consequently, setting the high limit prevents the battery from exceeding its safe voltage, maximizing lifespan.
• Low Voltage Disconnect: Protecting Lithium and Lead-acid batteries from deep discharge damage by initiating the charge cycle when voltage drops too low.
• Battery Tester/Monitor: Utilizing the display for constant, accurate monitoring of battery voltage in various devices.

Equivalent Models:

• XH-M601: A similar module but typically designed for lower voltage lead-acid batteries and featuring a slightly different configuration approach.
• XH-M604: An upgraded module that may offer additional features like charging time limits or current monitoring, however, the XH-M603 is preferred for simple voltage control.
• Various Digital Voltmeter Relay Boards: Any microcontroller-based relay board with adjustable voltage sensing can replicate the core functionality.

Package Includes:

• 1 x XH-M603 Battery Lithium Battery Charge Control Module