Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
MPN No: SolarX 4K
Expected ship date Jan 11 - 14
In Stock
739.00
-14%
$629.00
Sale
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
Regular price
$739.00
-14%
$629
15% OFF
New
LESS THAN 50
Sale
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
Available
MPN No: SolarX 4K
Regular price
$739.00
-14%
$629
Expected ship date Jan 11 - 14
We offer multiple secure payment options for your convenience
We offer multiple secure payment options for your convenience
Data Sheet
Regular price
$739.00
-14%
$629
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
MPN No:
SolarX 4K
Expected ship date Jan 11 - 14
Sale
Bluetti SolarX 4K World’s First 4kW Solar Charge Controller
For use with the Bluetti Apex 300
The BLUETTI SolarX 4K sets a new benchmark in solar charging performance. As the world’s first 4kW solar charge controller, it’s engineered for high-voltage, high-power solar arrays—unlocking faster charging, greater efficiency, and seamless integration with BLUETTI power systems and expansion batteries.
Designed for serious solar users, the SolarX 4K is the missing link between large solar arrays and next-generation energy storage.
Why SolarX 4K Changes the Game
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Industry-leading 4,000W solar input – Capture more solar, charge faster
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Advanced MPPT technology – Maximizes energy harvest in real-world conditions
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Built for large arrays – Ideal for high-voltage, high-wattage solar configurations
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Clean system expansion – Add massive solar capability without replacing your core power station
Key Technology Highlights
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4kW MPPT Solar Charge Controller
Delivers unprecedented solar charging power with precision tracking to extract maximum output from your panels. -
High-Voltage Solar Support
Enables longer strings and more efficient wiring runs—reducing losses and BOS complexity. -
Smart Thermal & Electrical Protection
Integrated safeguards for over-voltage, over-current, temperature, and fault protection. -
System-Level Intelligence
Designed to communicate seamlessly with compatible BLUETTI power stations and battery expansions for optimized charging behavior.
Best Uses
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High-capacity home backup systems
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Solar-heavy off-grid cabins and workshops
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DIY and professional solar installs needing faster recharge times
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Energy-dense mobile and trailer-based power systems
Compatibility & Integration
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Designed for use with select BLUETTI power stations and expansion batteries
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Supports large solar arrays where traditional controllers bottleneck performance
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Ideal companion for modular, expandable BLUETTI energy ecosystems
(Always confirm system compatibility before installation.)
Built for Solar-Forward Systems
The SolarX 4K isn’t just an accessory—it’s a system upgrade. By offloading solar charging to a dedicated, ultra-high-power controller, your main power station stays cooler, charges faster, and scales further than ever before.
Warranty & Reliability
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Backed by BLUETTI’s manufacturer warranty
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Engineered for continuous high-power operation
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Designed for long-term performance in demanding environments
Best Uses
Residential PV + BLUETTI: Add high-voltage rooftop arrays to BLUETTI ecosystems for fast DC charging.
Off-Grid Cabins & RVs: Leverage long PV strings to reduce wiring losses and simplify runs.
Home Backup: Combine with Apex 300/AC300/AC500 + expansion batteries for robust outage resilience.
What's in the Box:
Your BLUETTI SolarX 4K Solar Charge Controller ships with everything needed to mount the unit and begin system integration:
- BLUETTI SolarX 4K Solar Charge Controller
- Mounting screws
- Wall anchors
- Grounding screws
- OT terminals (for ground)
- Knockout connector
- Hex socket wrench
- User manual
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Locking Terminal to P090D Adapter Cable
Specifications Table
| Specification | Data |
|---|---|
| Model | SolarX 4K Solar Charge Controller |
| PV Max Input Power | 4,200 W |
| PV Open-Circuit Voltage (Voc) | 500 Vdc max |
| PV Startup Voltage | 150 Vdc |
| MPPT Operating Range | 120–450 Vdc |
| MPPT / Input Current | 1 tracker · 13 A rated / 17 A max |
| DC Output Power / Current | 4,000 W · 80 A max |
| DC Output Voltage | 35–58 Vdc (58 V max) |
| Compatibility | Apex 300, AC300, AC500; Batteries: B300K, B300, B300S (via appropriate cables) |
| Connectivity | RJ45 (CAN 2.0), Bluetooth, Wi-Fi (BLUETTI App) |
| MPPT Efficiency | Up to 99% |
| Thermal / Noise | Air-cooled (fan) · ~52 dB |
| Environmental | Operating −20°C to +55°C (derate >45°C); ≤2,000 m; 10–90% RH |
| Ingress Protection | IP21 |
| Dimensions (L × W × H) | 11.35 × 18.66 × 3.55 in |
| Net Weight | 16.8 lb |
| In the Box | Controller, mounting hardware, grounding screws/OT lugs; DC output cables vary by kit |
| Scalability | Stack up to 3 units (≈12 kW total solar intake) |
| Protections | Output/Bus over-current/over-voltage, short-circuit, reverse-polarity, insulation, thermal |
| Warranty | 2 Years |
About BLUETTI:
BLUETTI builds smart, reliable energy solutions for homes, travelers, and professionals. Known for clean power, durable battery tech, and versatile off-grid innovations, BLUETTI helps users stay powered anywhere.
Why Buy From US Solar Supplier?
As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.
Need Assistance?
We’re here to help! If you have any questions or need more information before making your purchase, don’t hesitate to call us at 1-800-230-7004. Our knowledgeable and friendly team is ready to assist you with product details, installation advice, or the purchasing process.
Why Buy From Us?
Trusted Supplier: We work with Tier 1 manufacturers who stand behind their products.
Expert Support: Our team is here to guide you every step of the way.
Easy and Secure Checkout: Your information is protected with top-notch security for a smooth, worry-free transaction.
Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!
FAQ
Shipping costs at US Solar Supplier are calculated based on the weight and dimensions of the product(s) in your order. The company utilizes FedEx or UPS for ground shipments and trusted freight carriers for larger shipments. All shipments are insured for customer protection.
For standard delivery, most orders will arrive at their destination within 7 to 10 business days. Please note that these estimates can change depending on the carrier's operational capabilities and other uncontrollable factors.
It is essential to meticulously inspect your shipment upon delivery. If any damage or issues are found, note them on the Bill of Lading (BOL) or the delivery receipt. Major visible damage should result in the rejection of the delivery. Any damages must be reported to US Solar Supplier by email within 24 hours of delivery, including the signed BOL and any supporting documents or photos.
US Solar Supplier offers only the best Tier 1 product offerings and high-quality solar equipment. You can design your solar project using the solar design tool, tailored to fit your needs. If you have specific preferences or deadlines, include this information in the order notes or contact the sales department before placing your order. US Solar Supplier is committed to empowering you with the tools and support needed to ensure your project's success.
US Solar Supplier offers a range of finance solutions through its partners, including Power Purchase Agreements, Leases, and Loans. Additionally, their consultative approach can help you take advantage of PACE financing for commercial projects. The team at US Solar Supplier is ready to assist in finding the right finance solution to make your solar project a reality.
