The Blue Color 20A PWM Solar Charge Controller 12V/24V with USB is a high-efficiency, intelligent solar charge regulator designed for home solar systems, DC solar kits, and off-grid power systems in Bangladesh. With an automatic 12V/24V voltage detection system, it supports lead-acid batteries including OPEN, AGM, and GEL types, making it versatile for a wide range of solar energy setups.

This controller efficiently manages solar charging and discharging through a fully 4-stage PWM charging system, improving battery lifespan, performance, and energy utilization. It is equipped with dual USB 5V/3A ports, allowing you to charge smartphones, tablets, and USB-powered gadgets directly from solar energy.

Built with an industrial-grade microcontroller, the system automatically controls charging, discharging, and load management. It remembers all user-set parameters even when the battery power runs out, ensuring smooth operation once power is restored. The intelligent LCD digital display shows system status, battery voltage, charge/discharge current, and load performance in real time, helping users monitor the solar system effectively.

The 20A PWM Solar Charge Controller includes advanced electronic protections like overload protection, short-circuit protection, reverse polarity protection, overcharge protection, low-voltage disconnect, and open-circuit protection. Its dual MOSFET design ensures reverse current protection with low heat generation, extending both the controller and battery life.

This controller is perfect for medium-sized solar systems used in homes, small shops, rural electrification, solar street lighting, camping systems, and DC off-grid setups. It can handle up to 260W solar panels (12V) or 520W solar panels (24V) efficiently.

How to Connect:

• Connect the battery to the controller first (to initialize voltage detection).

• Connect the solar panel to the solar input terminal.

• Finally, connect your DC load or USB device.

• Make sure connections are tight and polarity is correct to avoid damage.

• Use appropriate wire thickness for 20A current rating.

The blue color solar charge controller is designed with a compact body, digital display, and durable terminals, ensuring long-lasting reliability in Bangladesh’s solar environments.

Specifications:

• System Voltage: 12V / 24V Auto Detection

• Rated Charge/Discharge Current: 20A

• USB Output: Dual USB 5V / 3A (Max)

• Charging Mode: 4-Stage PWM (Bulk, Absorption, Float, Equalization)

• Control Type: Industrial Microcontroller Intelligent Management

• Display: Digital LCD Display with Real-Time Monitoring

• Operation Mode: One-Key Setting with Auto Memory Function

• Reverse Current Protection: Dual MOSFET Design, Low Heat Generation

• Battery Type: Lead-Acid (OPEN, AGM, GEL)

• Protections: Overload, Short Circuit, Reverse Connection, Overcharge, Low Voltage, Open Circuit, Over Temperature

• Recommended Solar Panel Capacity: Up to 260W (12V), 520W (24V)

• Load Control: Automatic Switch On/Off

• Memory Function: Data Retained During Power Loss

• Product Dimensions: 7 x 13.5 x 2.5 inches (17.8 x 34.3 x 6.4 cm)

• Weight: 158.76 grams (Approx. 5.6 oz)

• Applications: Home Solar Systems, DC Fans, Solar Street Lights, Small Solar Power Kits

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