4.4KW Complete Offgrid Solar Kit + 5K Sol-Ark Inverter + 15.36KW OMO Stack Lithium Battery +2.2KW Solar with Mounting Rails and Wiring

The 4.4KW Complete Offgrid Solar Kit + 5K Sol-Ark Inverter + 15.36KW OMO Stack Lithium Battery +2.2KW Solar with Mounting Rails and Wiring is a robust starter system for cabins, RVs, garages, pole barns, and small homes. With 15.36kWh of usable lithium storage (3 × 5.12kWh) and a 4.4KW bifacial solar array, this kit produces approximately 19,800 watts per day based on 4.5 peak sun hours—well suited for sites using around 594 kWh per month. It’s expandable with additional panels or batteries as your needs grow.

Specifications

• Solar Array: 8 × 550W Bifacial Solar Panels (4,400W total)

• Inverter: Sol-Ark 5K-2P-N Pure Sine Split-Phase (110/220V) — Grid-tied compatible or generator input

• Battery Storage: 3 × OMO 51.2V 5.12kWh Stackable Heated Batteries w/ Bluetooth (15.36kWh total)

• Battery Management: OMO Stackable Combiner with LCD Readout

• Base Unit: OMO Wheeled Battery Base

• Mounting System: IronRidge Mounting Rails / Splices / Legs / Fasteners / Bolts

• Wiring: 250' PV direct-burial solar wire; 100' 6AWG AC output/input/generator cable; MC4 crimp kit

• Electrical Components: Solar combiner box

• Documentation: Installation manual included

Features

• Bifacial Double-Glass Panels: Up to 25% extra rear-side harvest; excellent weak-light performance; 5400 PA snow / 2400 PA wind load; 30-year power warranty

• Appliance Coverage: Capable of running wells, washers, fans, TVs, lights, refrigerators/freezers, computers/devices, and smaller AC systems

• Hybrid-Ready: Works off-grid with solar, and supports grid-tie or generator input for charging

• Expandable Design: Add more panels or batteries as energy needs increase

• DIY-Friendly: Intended for homeowners with basic wiring knowledge; pro install recommended if unsure

• Production Guidance: Output estimates use ~4.5 peak sun-hours (Midwest average) and vary by region

Maintenance

• Daily: Monitor inverter output, battery status, and solar production

• Weekly: Inspect racking hardware, wiring runs, and combiner box indicators

• Annually: Clean panels, tighten all mounting and electrical connections, and apply inverter firmware updates

Warranty

• Solar Panels: 30-year performance warranty

• Sol-Ark Inverter: Manufacturer warranty per datasheet

• OMO Batteries & Combiner: Covered under OMO manufacturer warranty