4.4KW Complete Offgrid Solar Kit + 5K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +2.2KW Solar with Mounting Rails and Wiring

The Offgrid Solar Kit with Sol-Ark 5K Split Phase Inverter is an excellent complete starter system for cabins, shops, RVs, and small off-grid homes. With a powerful 20.48kWh lithium battery bank (4 × 5.12kWh) and a 4.4KW bifacial solar array, this system reliably produces approximately 19,800 watts of solar energy per day based on 4.5 hours of peak sun. It supports properties that use around 594 kWh per month and is fully scalable for future expansion.

Specifications

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

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

• Battery Storage: 4 × OMO 51.2V 5.12kWh Stackable Heated Lithium Batteries w/ Bluetooth (20.48kWh total)

• Battery Management: OMO Stackable Combiner with LCD Readout

• Base Unit: OMO Heavy-Duty Wheeled Battery Base

• Mounting Hardware: Complete IronRidge roof-mount rail system with 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 included

• Documentation: Full installation manual

Features

• Bifacial Solar Technology: Up to 25% additional rear-side energy harvest; superior performance in cloudy/low-light conditions; 5400 PA snow load & 2400 PA wind load; 30-year power warranty

• Appliance Support: Capable of running wells, washers, fans, TVs, lighting, refrigerators, freezers, electronics, and smaller AC systems

• Hybrid Capability: Supports solar, generator input, and grid-tie functionality

• Expandable System: Add more solar panels or additional batteries to meet growing power needs

• Energy Production: Estimated based on Midwest average of 4.5 peak sun hours; regional output will vary

• DIY-Friendly: Installable by homeowners with basic wiring knowledge; professional assistance recommended for complex setups

Maintenance

• Daily: Check inverter display and battery status for proper operation

• Weekly: Inspect mounting hardware, wiring, and combiner box indicators

• Annually: Clean solar panels, tighten all hardware, and complete full system inspection

Warranty

• Solar Panels: 30-year performance warranty

• Sol-Ark Inverter: Manufacturer warranty per official datasheet

• OMO Lithium Batteries & Components: Covered under OMO factory warranty