Gaqqee CNC DC Buck-Boost Converter MPPT Solar 180W/220W 6–36V

Gaqqee SK180S/SK180X/SK220S/SK220X CNC DC Step-Up/Step-Down Converter with MPPT Solar Charging

The Gaqqee CNC DC Buck-Boost Converter is a precision-engineered, programmable power module designed for professionals, hobbyists, and solar energy enthusiasts. With an input range of 6.0–36V, adjustable output up to 40V, and a maximum output current of 9A, this versatile module handles demanding power conversion tasks with ease — whether you're building a lab bench supply, charging batteries, or optimising a solar panel setup with built-in MPPT charging support.

Made in Mainland China and CE & RoHS certified for peace of mind.

Key Features

• Dual Power Variants: Choose between the 180W (SK180S/SK180X) or 220W (SK220S/SK220X) output model to match your application.
• MPPT Solar Charging: Built-in Maximum Power Point Tracking lets you connect directly to solar panels for optimised, efficient charging.
• High Conversion Efficiency: Approximately 88% efficiency minimises energy waste and heat generation.
• Ultra-Precise Adjustment: Fine-tune voltage to 0.01V resolution and current to 0.001A resolution via ergonomic silicone buttons with indicator lights.
• 10-Group Data Storage: Save and recall up to 10 preset configurations for fast, repeatable setups.
• Built-in Buzzer: Provides tactile button feedback and audible alarm alerts for safer operation.
• Soft Start: Gradual power ramp-up protects connected devices from inrush current.
• External Temperature Probe Support: Connect an optional probe for additional thermal monitoring and over-temperature protection.
• CE & RoHS Certified: Meets EU Low Voltage Directive standards (below 50Vac / 75Vdc).

Comprehensive Protection Suite

• Input Reverse Connection Protection
• Output Backfeed Protection
• Input Undervoltage Protection: adjustable 5.5–36V (default 5.5V)
• Overvoltage Protection: adjustable 0–42V (default 42V)
• Overcurrent Protection: adjustable 0–9.2A (default 9.2A)
• Overpower Protection: 0–200W (SK180S/X) or 0–240W (SK220S/X)
• Over-Temperature Protection: adjustable 60–110°C (default 110°C)
• Timeout Protection: 1 min – 99 hrs 59 min (default off)
• Over-Capacity Protection: 0–9999 Ah adjustable (default off)
• Over-Energy Protection: 0–4500 kWh (SK180S/X) / 0–4200 kWh (SK220S/X)
• Probe Over-Temperature Protection: 0–110°C adjustable (default off)

Full Specifications

What's in the Box

• 1× Adjustable Step-Up/Step-Down Power Module

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Frequently Asked Questions

Q: What is the difference between the SK180S/SK180X and SK220S/SK220X models?

A: The SK180S and SK180X models support a maximum output power of 180W, while the SK220S and SK220X models support up to 220W. All four variants share the same input voltage range (6.0–36V), output current (0–9A), and feature set including MPPT solar charging, precision button controls, and the full suite of protection mechanisms.

Q: Can this converter be used directly with a solar panel?

A: Yes. The Gaqqee CNC DC Step-Up/Step-Down Converter includes built-in MPPT (Maximum Power Point Tracking) functionality, allowing it to connect directly to a solar panel and optimise energy harvest for battery charging or powering DC devices.

Q: Does this module both step up (boost) and step down (buck) voltage?

A: Yes. This is a true buck-boost converter. It can step down a higher input voltage to a lower output voltage, or step up a lower input voltage to a higher output voltage — all within its 6.0–36V input and 0–40V output range, making it extremely versatile for various DC power conversion applications.

Q: How are voltage and current settings adjusted?

A: Settings are adjusted via the onboard silicone buttons, each with a stylish indicator light. Voltage can be set in 0.01V increments and current in 0.001A increments, providing very fine control. Up to 10 configuration groups can be stored and recalled for convenience.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.