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Sol Ark 18kW Hybrid Inverter + (2) Discover Helios 16.1 kWh Outdoor Lithium Battery - 32kWh Battery Solar Kit

Sol Ark 18kW Hybrid Inverter + (2) Discover Helios 16.1 kWh Outdoor Lithium Battery - 32kWh Battery Solar Kit

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Sol Ark 18kW Hybrid Inverter + (2) Discover Helios 16.1 kWh Outdoor Lithium Battery - 32kWh Battery Solar Kit

Sol Ark 18kW Hybrid Inverter + (2) Discover Helios 16.1 kWh Outdoor Lithium Battery - 32kWh Battery Solar Kit

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MPN No: Sol Ark 18K-2P-N + Discover 32kWh 52-48-16000
Regular price $14,018.90 -7% $12,996.99

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Expected ship date Nov 20 - 27

Installation Guide: Sol Ark + Discover
Data Sheet: Discover Helios 16kWh
Data Sheet: Sol Ark 18kW

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Regular price $14,018.90 -7% $12,996.99

Sol-Ark 18K Hybrid Inverter + Discover HELIOS 32.2kWh Battery Kit

What's Included
  • (1) Sol-Ark 18kW Hybrid Solar Inverter – 18K-2P-N
  • (2) Discover HELIOS 16.1kWh Outdoor Lithium Batteries – 52-48-16000
  • (1) Discover HELIOS Generic Conduit Box – 950-0077
  • (1) Discover Battery-to-Inverter Power Cable Set – 950-0070
  • (1) Discover Parallel Battery-to-Battery Cable Set – 950-0068

Take control of your home's energy with the Sol-Ark 18K Hybrid Inverter and Discover HELIOS 32.2kWh Battery Kit. This powerful solar and energy storage bundle combines a high-output hybrid inverter with two outdoor-rated Discover HELIOS lithium batteries, creating a robust foundation for residential solar storage, whole-home backup designs, and off-grid applications.

With a substantial battery bank, advanced energy management, and manufacturer-supported integration, this system is designed to store solar energy, supply backup electricity during outages, and help homeowners reduce dependence on the utility grid.

Unlike a single-battery configuration, the dual HELIOS arrangement provides greater available battery discharge current and extended energy storage, making it a stronger match for the Sol-Ark 18K's high-output capabilities.


Key Features & Benefits

  • High-output hybrid inverter: Designed to manage demanding residential electrical loads and large solar arrays.
  • Dual HELIOS lithium batteries: Greater energy storage and available discharge capability than a single-battery configuration.
  • Manufacturer-supported compatibility: Discover HELIOS integrates with supported Sol-Ark hybrid inverter platforms.
  • LiFePO4 battery technology: Durable lithium iron phosphate chemistry with advanced battery management.
  • Closed-loop battery communication: Supported integration coordinates battery charging, discharge limits, and operating status.
  • Outdoor-rated equipment: Weather-resistant inverter and battery enclosures allow flexible installation options.
  • Integrated battery heating: HELIOS batteries are designed for operation in challenging cold-weather environments.
  • High surge capability: Sol-Ark's inverter platform is engineered for demanding motor loads when adequate source power is available.
  • Expandable storage: Additional compatible HELIOS batteries can be incorporated into properly designed parallel systems.
  • Hybrid energy management: Coordinate solar production, battery storage, utility power, and compatible generators.

Sol-Ark 18K Hybrid Solar Inverter

The Sol-Ark 18K-2P-N is a powerful residential hybrid inverter engineered for large solar arrays, substantial electrical loads, and flexible backup configurations.

By combining solar conversion, battery management, grid interaction, and generator integration, the Sol-Ark platform allows homeowners to manage multiple energy sources through one central system.

High-Capacity Solar and Backup Power

The Sol-Ark 18K is designed to support larger residential electrical demands, including compatible HVAC equipment, pumps, kitchen appliances, and other household circuits.

Its advanced surge capability helps accommodate motor startup requirements when the connected battery bank and available energy sources can supply the necessary power.

Intelligent Energy Management

Use supported operating modes to prioritize solar self-consumption, maintain battery reserves, and manage electricity usage during higher-cost utility periods.

With compatible solar panels and properly configured backup circuits, the inverter can help keep selected household loads operating when utility power is unavailable.


Discover HELIOS 32.2kWh Lithium Battery Storage

This bundle includes two Discover HELIOS outdoor lithium batteries, providing a substantial energy reserve for residential backup and solar storage applications.

Each HELIOS battery uses LiFePO4 chemistry and Discover's fourth-generation Battery Management System, designed to monitor battery operation, coordinate charging and discharging, and provide protective functions.

Greater Battery Power with Parallel Operation

Connecting the two HELIOS batteries in an approved parallel configuration increases the battery bank's available discharge current and energy storage capacity.

This makes the dual-battery configuration particularly well suited to the Sol-Ark 18K, helping support larger electrical loads while providing additional stored energy for extended backup operation.

Outdoor-Ready Energy Storage

HELIOS batteries feature durable galvanized steel enclosures, weather-resistant construction, and integrated self-heating systems for cold-weather operation.

The wall-mounted design provides a compact alternative to large indoor battery cabinets, while quick-connect terminals help streamline installation.


Designed for Seamless Sol-Ark Integration

Discover Energy Systems supports HELIOS battery integration with the Sol-Ark 18K hybrid inverter, enabling coordinated energy storage operation through compatible closed-loop communication.

With proper configuration, the inverter and batteries exchange operating information to manage charging, discharge limits, and battery status.

The included Discover conduit box and power cable sets help support an organized installation, including the connection between the inverter and battery bank and the parallel connection between the two HELIOS batteries.


Solar Storage, Home Backup, and Off-Grid Power

This hybrid inverter and battery kit provides a flexible foundation for several residential energy applications.

  • Whole-home backup designs: Support larger residential backup systems when properly sized for the home's electrical demands.
  • Solar self-consumption: Store excess solar energy for use after sunset or during reduced solar production.
  • Extended outage protection: Use stored battery energy to operate compatible essential household circuits.
  • Off Grid Solar System: Combine solar generation, battery storage, and appropriate backup generation for independent power applications.
  • Time-of-use savings: Manage stored electricity during peak utility pricing periods where supported.
  • Expandable energy storage: Add compatible HELIOS batteries to meet changing energy requirements.

Product Specifications

Specification Details
Inverter Model Sol-Ark 18K-2P-N
Inverter AC Output 18,000W continuous; 36,000W surge for 10 seconds; 120/240V split-phase
Supported Solar PV Capacity 32,400W maximum supported PV; 28,800W maximum usable PV; 3 MPPTs
Inverter Battery Input 40–60V DC; 350A maximum continuous charge/discharge
Battery Model / Quantity Discover HELIOS 52-48-16000 / 2 batteries
Total Battery Storage 32,160Wh (32.16kWh); LiFePO4
Battery Bank Voltage / Capacity 51.2V nominal / 628Ah total in parallel
Combined Battery Discharge Capability Up to 400A continuous / 20.48kW DC, subject to system limits
Enclosure Ratings Sol-Ark: IP65 / NEMA 3R; HELIOS: IP65
Equipment Weight Inverter: 137 lbs; batteries: 299.83 lbs each

Additional System Requirements

This bundle includes the hybrid inverter, two lithium batteries, conduit box, and specified battery power cable sets. A complete installation may also require:

  • Compatible solar panels and mounting equipment
  • PV wiring, connectors, and appropriate DC balance-of-system components
  • Required AC wiring, breakers, disconnects, and distribution equipment
  • Grounding, bonding, and applicable rapid shutdown components
  • Required battery communication cables and accessories
  • Additional battery storage if needed for extended backup or higher surge demands
  • Permits, inspections, and utility interconnection approval where applicable

Installation and commissioning should be performed by qualified electrical professionals following manufacturer instructions and applicable electrical codes.


Frequently Asked Questions

Are the Sol-Ark 18K and Discover HELIOS batteries compatible?

Yes. Discover identifies HELIOS ESS as a supported battery solution for the Sol-Ark 18K. Proper communication wiring, firmware, and commissioning settings are required.

Why does this kit include two HELIOS batteries?

Two batteries provide greater energy storage and available discharge current than one battery. This configuration is a better match for the Sol-Ark 18K's full continuous battery-current requirements.

Can this kit provide whole-home backup power?

It can form the foundation of a whole-home backup system, but actual capability depends on household electrical loads, motor startup requirements, available battery power, and the final electrical design.

Does this bundle include solar panels?

No. Solar panels, racking, and site-specific solar wiring are sold separately.

Can the batteries be installed outdoors?

Yes. Discover HELIOS batteries have weather-resistant enclosures and integrated self-heating systems. Installation must follow the manufacturer's environmental, clearance, and mounting requirements.

Can additional HELIOS batteries be added later?

Yes. HELIOS supports parallel battery expansion when installed with the required cables, communication accessories, and approved configuration.

Does the kit include battery connection cables?

Yes. The bundle includes a battery-to-inverter power cable set and a parallel battery-to-battery cable set. Additional communication wiring or site-specific electrical accessories may be required.

Can this system operate without the utility grid?

Yes. The Sol-Ark inverter supports off-grid operation with compatible batteries and appropriately sized solar or backup generation. A complete off-grid system must be designed around expected electrical loads and energy consumption.

How long will the batteries provide backup power?

Backup duration depends on the connected loads, battery state of charge, inverter losses, and available solar production. Higher household energy consumption reduces runtime.