

The Knox Combo Deal 3B offers a powerful, all-in-one solar energy solution that combines the Krypton ECO 6600 6.2kW Hybrid Solar Inverter with the Powerwall 6.1 51.2V 100Ah Lithium Battery. Built for high efficiency and reliability, this combo is ideal for homes and small businesses seeking uninterrupted, eco-friendly power.
Krypton ECO 6600 6.2kW Hybrid Solar Inverter
6.2kW pure sine wave hybrid inverter with 6600W PV input capacity
Pure sine wave output ensures stable and clean power supply
Hybrid functionality supports both solar and grid power input
Advanced MPPT technology delivers maximum solar charging efficiency
Batteryless operation with seamless grid-tied performance
Intelligent load management for optimized energy consumption
LCD display for system status, control, and monitoring
Integrated Battery Management System (BMS) for extended battery life
Feed-into-the-grid capability to maximize solar energy utilization
Powerwall 6.1 Lithium Battery (51.2V 100Ah)
High-performance LiFePO₄ cells for long cycle life and safety
5.12kWh energy capacity for reliable power backup
Built-in BMS provides balanced charging and protection
Wall-mount compact design for easy installation
Ideal for hybrid and off-grid solar applications
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.