

The Knox Combo Deal 2A offers a powerful and efficient renewable energy solution, featuring the Krypton ECO 5000 4kW Hybrid Solar Inverter paired with the Powerwall 3.0 25.6V 100Ah Lithium Battery. This all-in-one system delivers reliable power backup, energy savings, and long-term performance for homes and businesses.
Krypton ECO 5000 4kW Hybrid Solar Inverter
4kW pure sine wave hybrid inverter with 5000W PV input capacity
Pure sine wave output ensures stable and clean power delivery
Hybrid functionality supports both solar and grid power inputs
Advanced MPPT technology for high solar charging efficiency
Batteryless operation with seamless grid-tied compatibility
LCD display for real-time system status and control
Intelligent load management optimizes power consumption
Integrated Battery Management System (BMS) extends battery life
Feed-into-the-grid capability to maximize solar utilization
Full protection against overload, short-circuit, and overheating
Built-in anti-dust kit for enhanced durability and long lifespan
Powerwall 3.0 Lithium Battery (25.6V 100Ah)
Premium LiFePO₄ battery cells for safety and long cycle life
2.56kWh storage capacity for reliable backup power
Built-in BMS for balanced performance and protection
Compact, wall-mounted design for convenient installation
Designed for continuous use in hybrid or 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.