

The Knox Combo Deal 2B delivers a complete, high-performance solar power solution combining the Krypton ECO 5000 4kW Hybrid Solar Inverter with the Powerwall 3.1 25.6V 100Ah Lithium Battery. Designed for reliable energy independence, this system ensures maximum efficiency, seamless power backup, and long-term durability for homes and small businesses.
Krypton ECO 5000 4kW Hybrid Solar Inverter
4kW pure sine wave hybrid inverter with 5000W PV input capacity
Pure sine wave output for stable, clean, and reliable power delivery
Hybrid functionality supports both solar and grid input modes
Advanced MPPT technology for optimal solar charging efficiency
Batteryless operation with seamless grid-tied functionality
Intelligent load management to optimize power consumption
LCD display for easy system monitoring and control
Integrated Battery Management System (BMS) for longer battery life
Feed-into-the-grid capability to maximize solar investment
Full protection against overload, short-circuit, and overheating
Built-in anti-dust kit for enhanced durability and lifespan
Powerwall 3.1 Lithium Battery (25.6V 100Ah)
High-grade LiFePO₄ cells offering superior safety and long cycle life
2.56kWh storage capacity for dependable power backup
Built-in BMS ensures balanced charging and system protection
Wall-mount compact design ideal for space-saving installation
Reliable operation in hybrid and off-grid systems
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.