KKMOON PWM Solar Charge Controller 12V/24V Dual USB LCD

KKMOON PWM Solar Charge Controller — Dual USB, LCD Display, 12V/24V Auto

Keep your solar energy system running efficiently with the KKMOON PWM Solar Charge Controller. Featuring a large LCD screen, dual USB output, and automatic 12V/24V voltage recognition, this versatile controller is ideal for off-grid cabins, RVs, boats, camping setups, and home solar installations. Built with an industrial-grade control chip and comprehensive self-recovery protection circuits, it delivers reliable, worry-free performance season after season.

Key Features

• Industrial-Grade Control Chip: Complete 3-stage PWM charging management (bulk, absorption, float) with ultra-low heat generation and built-in backflow resistance.
• Large LCD Display: Monitor charging and discharging current in real time, query accumulative power generation and discharge power, and check temperature at a glance.
• Light Control + Delay Control: Programmable light control and delay functions with adjustable charging/discharging parameters and power-off memory.
• Dual USB Output: Two USB ports deliver up to 5V/2.5A, supporting simultaneous charging of smartphones, tablets, and other USB devices.
• Self-Recovery Protection: Built-in over-current, short-circuit, open-circuit, and reverse-connection protection — all self-resetting, with no damage to the controller.
• Wide Temperature Range: Operates reliably from -35°C to +60°C, suitable for harsh outdoor environments.
• Universal Battery Compatibility: Works with sealed, open (flooded), and gel battery types.

Specifications

What's in the Box

• 1 × KKMOON PWM Solar Charge Controller
• 1 × English User Manual

Installation Tips

1. Ensure the battery has sufficient voltage before first installation so the controller can correctly identify the battery system (12V or 24V).
2. Mount the controller as close to the battery as possible to minimize voltage drop from long cable runs.
3. Only use photovoltaic (solar) panels as the charging source — do not connect DC power supplies or other charging sources.
4. Install the controller on a flat, well-ventilated surface to allow proper heat dissipation during operation.

Made in Mainland China.

For guidance on safe solar installation practices, visit the U.S. Department of Energy — Homeowner's Guide to Going Solar.

Frequently Asked Questions

Q: What is the difference between a PWM solar charge controller and an MPPT controller?

A: A PWM (Pulse Width Modulation) controller like this KKMOON unit regulates charging by gradually reducing the current as the battery reaches full capacity, making it a cost-effective and reliable choice for smaller solar systems. MPPT controllers track the maximum power point of the solar panel for higher efficiency, typically in larger or more complex systems. For most off-grid setups up to 780W, a quality PWM controller offers excellent value and dependable performance.

Q: Can this solar charge controller work with lithium batteries?

A: This controller is optimized for sealed (AGM), open (flooded), and gel lead-acid batteries. While some lithium batteries may be connected, the charging profiles are designed for lead-acid chemistry. Always verify your battery manufacturer's recommended charge voltages before connecting a lithium battery to ensure compatibility.

Q: How do I know which current rating (10A, 20A, or 30A) I need?

A: Choose your current rating based on your total solar panel wattage. Divide your panel wattage by your system voltage (12V or 24V) to get the required amperage. For example, a 200W panel on a 12V system requires approximately 16.7A — so select the 20A model. Always size up slightly for a safety margin.

Q: Does the dual USB output work independently of the solar panel?

A: Yes. The dual USB ports draw from the battery, so as long as the battery is charged, you can use the USB outputs to charge devices even when solar panels are not actively generating power (e.g., at night or on cloudy days).