Product Description
30A MPPT Solar Charge Controller 12V/24V Auto Fan Cooled Regulator for LiFePO4
30A MPPT Solar Charge Controller 12V/24V Auto Fan Cooled Regulator for LiFePO4Stay Cool, Charge More!
The efficient, durable, and affordable solution for your 12V/24V Solar System.
🔥 Why Choose POWLSOJX?
1. 💨 Active Turbo Cooling Fan
Heat is the enemy of solar chargers. While standard controllers overheat and slow down (derate) in hot weather, the KR-MPT30A features a built-in smart cooling fan and an aluminum heatsink backplate1.
Continuous Power: Maintains full 30A charging current even in high ambient temperatures (up to 45°C).
Extended Lifespan: Active cooling prevents component burnout.
2. ⚡ Advanced MPPT Technology
Utilizes Buck Circuit Topology to maximize energy harvest from your solar panels.
Increases charging efficiency by 10-30% compared to traditional PWM controllers.
Note: Designed specifically for stability and cost-performance.
3. 🔋 Lithium & Lead-Acid Ready
Compatible with LiFePO4, Lithium-ion, and Lead-acid (Gel/AGM/Flooded) batteries.
Fully Adjustable: You can customize charging voltages (Float, LVD, LVR) via the menu to perfectly match your battery specs.
4. 📊 User-Friendly Interface
Large LCD Display: Real-time monitoring of Battery Voltage, Charging Current (Amps), Temperature, and System Status.
Dual USB Ports: 5V output to directly charge mobile phones, tablets, or USB fans.
📝 Technical Specifications
Feature | Specification |
Model | KR-MPT30A |
System Voltage | 12V / 24V (Auto Detection) |
Rated Current | 30A |
Max PV Input Voltage (Voc) | < 60V (Do not exceed!) |
Max PV Input Power | 360W (12V System) / 720W (24V System) |
Standby Power | < 20mA @ 12V |
Dimensions | 166 x 120 x 60 mm |
Weight | 510g |
Max Wire Size | 15mm² / 6AWG |
⚠️ IMPORTANT WIRING NOTICE
PLEASE READ BEFORE INSTALLATION:
Strict Voltage Limit: The Maximum Open Circuit Voltage (Voc) of your solar panel array must be LESS THAN 60V.
Do NOT connect panels in series (string) if the total voltage exceeds 60V.
Recommended: Connect panels in PARALLEL to increase current while keeping voltage safe.
Connection Order:
Step 1: Connect the Battery to the controller first. (The screen will turn on).
Step 2: Connect the Solar Panel second.
Step 3: Connect the Load (Optional).
Reverse the order when uninstalling.
❓ Frequently Asked Questions (FAQ)
Q: Is this a "True" MPPT controller?
A: Yes, it uses MPPT (Maximum Power Point Tracking) technology with a Buck converter topology to step down voltage and increase current. It is significantly more efficient than PWM controllers.
Q: Does it work with 24V batteries?
A: Yes. It automatically detects 12V or 24V systems upon connection. Note: For 24V systems, ensure your solar panel voltage is within the 30V-55V range.
Q: Why does it have a fan?
A: We designed this for durability. The fan actively removes heat, allowing the controller to run at full 30A power without overheating, making it perfect for hot climates like Africa, South America, and Australia.
Q: Can I charge a completely dead lithium battery?
A: Yes, if the battery voltage is sufficient for the controller to power up, it can charge. Please ensure the battery voltage is within the recognition range.
📦 What's in the Box?
1x KR-MPT30A Solar Charge Controller
1x User Manual (English)





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Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.