30A 12V/24V PWM Solar Charge Controller with Dual USB Outputs

PWM Solar Charge Controller for Small Off-Grid Systems

This 30A PWM solar charge controller is designed to automatically regulate voltage and current from your solar panels to your battery, protecting your system while maximizing battery life. It is an ideal solution for small homes, cabins, RVs, boats, sheds, and other portable or off-grid solar power systems that use traditional lead-acid batteries.

With built-in protection circuitry and an easy-to-read LCD display, this controller helps prevent overcharging, over-discharging, reverse polarity damage, and nighttime battery drain back into the solar panels.

12V / 24V Auto-Detect Solar Battery Regulator

The controller automatically detects 12V or 24V battery systems on startup, simplifying installation and reducing setup errors. It supports sealed, gel, and flooded lead-acid batteries and uses a 3-stage PWM charge algorithm to deliver stable, reliable charging while extending battery lifespan.

Note: This controller is designed exclusively for lead-acid battery types and is not compatible with lithium-ion, NiCd, or other battery chemistries.

Integrated Dual USB Charging Ports

In addition to battery and load terminals, this PWM solar charge controller includes dual USB outputs for directly powering or charging USB devices. The USB ports provide up to 5V / 2A total output, making it convenient for charging phones, tablets, GPS units, and other small electronics directly from your solar system.

Built-In Protection and Intelligent Power Management

An industrial-grade master control chip manages charging and discharging with adjustable parameters to stabilize output and prolong battery life. Dual MOSFET reverse current protection prevents power loss during low-light or nighttime conditions.

• 3-stage PWM charging (bulk, absorption, float)
• Short-circuit, open-circuit, overload, and reverse polarity protection
• Prevents battery discharge into panels at night
• Low internal power consumption for efficient operation

Technical Specifications

• Controller Type: PWM
• Rated Current: 30A
• Battery Voltage: 12V / 24V (auto recognition)
• Maximum Solar Input Power: 240W (12V), 480W (24V)
• Maximum Discharge Current: 10A
• USB Output: 5V / 2A (total)
• Battery Types Supported: Sealed, Gel, Flooded lead-acid
• Operating Temperature: -35°C to +60°C
• Internal Power Consumption: ≤10mA

Simple Installation and Operation

The controller is easy to install and operate, with clear terminal labeling and an LCD backlit display showing system status and charging parameters. For proper operation, the battery must be connected first to power the controller before connecting solar panels or loads.

This 30A PWM solar charge controller is a reliable, cost-effective choice for managing small to medium off-grid solar systems while providing convenient USB charging and robust battery protection.