

The Knox Combo Deal 4A is a complete solar energy package featuring the Krypton ECO 6000 4kW Hybrid Solar Inverter paired with the Powerwall 3.0 25.6V 100Ah Lithium Battery. Designed for reliable power backup and long-term energy efficiency, this combo is perfect for homes, offices, and small businesses seeking to lower energy costs and ensure uninterrupted power.
Krypton ECO 6000 4kW Hybrid Solar Inverter
4kW pure sine wave hybrid inverter with 6000W PV input capacity
Pure sine wave output ensures clean, stable, and reliable power supply
Hybrid functionality supports both solar and grid input sources
Advanced MPPT technology for maximum solar charging efficiency
Batteryless operation with seamless grid-tied performance
Intelligent load management for efficient energy use
LCD display for real-time system monitoring and control
Integrated Battery Management System (BMS) for enhanced battery life
Feed-into-the-grid capability for improved solar utilization
Comprehensive protection against overload, short-circuit, and overheating
Built-in anti-dust kit for improved durability and lifespan
Powerwall 3.0 Lithium Battery (25.6V 100Ah)
High-quality LiFePO₄ cells ensuring safety and long cycle life
2.56kWh energy storage capacity for reliable backup power
Built-in BMS for protection, performance, and balanced charging
Wall-mount compact design for easy installation and maintenance
Suitable for hybrid and off-grid solar 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.