400W MPPT Solar Charge Controller | 10–30V Adjustable Output
400W MPPT Solar Charge Controller | 10–30V Adjustable Output
400W MPPT Solar Charge Controller with Real-Time LED Monitoring
Maximize every ray of sunlight with this high-efficiency 400W MPPT Solar Charge Controller. Featuring step-up/step-down conversion, real-time LED display monitoring, and a fully adjustable output voltage between 10–30V, this controller is the smart choice for off-grid solar setups, RVs, cabins, and DIY solar projects. Compatible with lead-acid, lithium-ion, and other battery types that accept a 10–30V recharging voltage.
Made in Mainland China.
Key Features
- Real-Time LED Display: Clearly shows live input and output current and voltage at a glance, so you always know exactly what your system is doing.
- Adjustable Output Voltage (10–30V): Dial in the exact voltage your battery bank requires — versatile enough for a wide range of 12V and 24V battery systems.
- 99% MPPT Efficiency: Advanced Maximum Power Point Tracking algorithm continuously finds and locks onto the optimal operating point of your solar panels for maximum energy harvest.
- 97% PWM Conversion Efficiency: Minimizes energy loss during charge conversion, keeping more power in your batteries.
- Overheat Protection: Automatically reduces output power at 100°C and shuts off at 110°C; resumes normal operation once the temperature drops back below 85°C.
- Short-Circuit Protection: Automatically closes output upon detecting a short circuit and restores normal operation once the fault is cleared.
- Input Under-Voltage Protection: Protects the controller by shutting down when input DC voltage drops below 15V, resuming automatically when voltage normalizes.
- Aluminum Construction: Durable aluminum body provides excellent heat dissipation and long-term durability in demanding environments.
- Wide Operating Temperature Range: Performs reliably from -40°C to 65°C, suitable for harsh outdoor installations.
Technical Specifications
| Output Power Options | 200W / 300W / 400W (optional) |
| Solar Panel Open Circuit Voltage | 18V – 55V |
| Solar Panel Max Power Voltage | 17V – 55V |
| PV Input Starting Voltage | 18V – 55V |
| PV Input Tracking Voltage | 17V – 55V |
| Output Battery Voltage | 10–30V (adjustable) |
| Output Battery Current (Max) | 25A |
| No-Load Loss | 0.35W |
| Voltage Adjustment Rate | 1% |
| Load Adjustment Rate | 1% |
| PWM Conversion Efficiency | 97% |
| MPPT Efficiency | 99% |
| Working Temperature | -40°C – 65°C |
| Material | Aluminum |
| Item Size | 130 × 80 × 40 mm / 5.1 × 3.1 × 1.6 in |
| Item Weight | 450g / 1.0 lb |
| Installation Hole Pitch | 110mm × 70mm |
| Installation Hole Diameter | 5mm |
| Wire Lead Length | 50mm |
| Package Size | 160 × 90 × 50 mm / 6.3 × 3.5 × 2.0 in |
| Package Weight | 500g / 1.1 lb |
What's in the Box
- 1 × MPPT Solar Charge Controller (power level optional: 200W / 300W / 400W)
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Frequently Asked Questions
Q: What types of batteries is this MPPT solar charge controller compatible with?
A: This MPPT solar charge controller is compatible with lead-acid, lithium-ion, and other battery types that operate within a 10–30V recharging voltage range. The adjustable output voltage makes it flexible enough to suit both 12V and 24V battery systems commonly used in off-grid solar setups, RVs, and marine applications.
Q: What solar panel specifications are required for this controller?
A: The controller works with solar panels that have an open circuit voltage of 18V–55V and a maximum power voltage of 17V–55V. The photovoltaic input starting voltage is 18V, and the tracking voltage range is 17V–55V. Panels rated up to 400W total output power are supported.
Q: Does this controller protect against short circuits and overheating?
A: Yes. The controller includes built-in short-circuit protection that automatically shuts off the output when a fault is detected and restores operation once the fault is cleared. It also features thermal protection: output power is reduced at 100°C, the unit shuts off at 110°C, and automatically resumes when the internal temperature falls back below 85°C.
Q: Can I monitor the controller's performance in real time?
A: Absolutely. The integrated LED display shows live input and output voltage and current readings, allowing you to monitor your solar system's performance at a glance without any additional equipment.
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.