16kWh Battery Solar Kit – Sol-Ark 18K-2P-N Hybrid Inverter + Discover HELIOS 16.1kWh Outdoor Battery

A Smart All-in-One Power Solution

Save up to $870 with bundling and flat ship

If you’re building a serious backup or off-grid system, this is where you start. This pairing of the Sol-Ark 18K and Discover HELIOS battery isn’t entry-level—it’s designed to run real loads: HVAC, pumps, EV charging, and full-home backup without compromise.

You’re getting a high-output hybrid inverter with industry-leading surge capacity, paired with a rugged, outdoor-rated lithium battery that’s built to scale as your energy needs grow.

This Kit Includes:

• (1) Sol-ArK 18K-2P-N 15kW Hybrid Inverter (120/240V Split-Phase)
• (1) Discover HELIOS ESS 52-48-16000 Outdoor Battery – 16.1kWh LFP Energy Storage System
• (1) Discover 950-0067 HELIOS ESS Conduit Box (Sol-Ark Interface)
• (2) Discover 950-0072 Battery Connector Sets

Why This System Works

This is a proven integration—not a mix-and-match setup. Discover HELIOS batteries are designed specifically to pair with Sol-Ark hybrid inverters for seamless communication, fast installs, and reliable performance.

• True Whole-Home Backup – Near-instant transfer (~5ms) keeps critical loads online during outages
• High Output Power – 18kW continuous with massive 36kW surge for starting heavy loads like HVAC
• Scalable Storage – Start at 16.1kWh and expand as needed
• Outdoor-Ready – Both inverter and battery are IP65/NEMA-rated for real-world installs
• Clean Installation – Purpose-built conduit box and quick-connect terminals simplify setup

Best Uses / Applications

• Whole-home backup systems
• Off-grid or hybrid solar installations
• Homes with large loads (HVAC, well pumps, EV charging)
• Time-of-use (TOU) energy shifting and utility savings
• Grid resilience and outage protection

Key System Performance

Sol-Ark 18K-2P-N Hybrid Inverter

• 18,000W continuous AC output
• 36,000W surge (10 seconds)
• Up to 32.4kW PV input (DC coupled)
• 200A grid passthrough (whole-home capable)
• 97.6% max efficiency
• 3 MPPT trackers for flexible array design
• 10-year standard warranty

Discover HELIOS 16.1kWh Battery

• 16,080 Wh (16.1 kWh) energy storage
• 51.2V, 314Ah lithium iron phosphate (LFP)
• 200A continuous charge/discharge
• 10.24kW continuous discharge power
• 300A peak discharge (15 sec)
• IP65 outdoor-rated with built-in heating (down to -25°C)
• Expandable up to 48kWh+ (and far beyond in larger systems)

Installation & Compatibility

• Designed for closed-loop communication with Sol-Ark inverters
• Includes dedicated conduit box for clean, code-compliant wiring
• Quick-connect terminals reduce install time
• Wall-mounted, outdoor-rated system

This is installer-friendly hardware—less time fighting wiring, more time commissioning.

Product Specifications

System Overview

Sol-Ark 18K-2P-N Hybrid Inverter Specifications

Discover HELIOS 16.1kWh Battery Specifications

Included Accessories