16kWh Whole Home Backup: Discover Helios 48V LiFePO4 Battery + 18kW Sol-Ark Hybrid Inverter. ESS kit.

This kit includes the primary components listed below. Additional wiring, mounting hardware, or balance-of-system equipment may be required depending on your installation requirements. Contact our team for a personalized equipment review and custom add-on pricing.

The 16kWh Whole Home Backup ESS Kit combines the Discover Energy Helios 52-48-16000 LiFePO4 battery, the Sol-Ark 18K-2P-LV hybrid inverter, and a factory-matched cable set into a complete solar battery backup system for home and residential off-grid installations. Every component is pre-selected for electrical and communication compatibility — eliminating the hours of datasheet cross-referencing that comes with building a system from individual parts.

What's included

• Discover Energy Helios 52-48-16000 (900-0077) — 16.08 kWh, 51.2V, 314 Ah LiFePO4 ESS battery; outdoor-rated IP65 enclosure; 4th Gen BMS with LYNK port.
• Sol-Ark 18K-2P-LV — 18,000W split-phase hybrid inverter; 120/240V pure sine wave output; 3 built-in MPPT solar charge controllers.
• Discover Energy 950-0070 — Helios Series 2/0 AWG battery-to-inverter cable set; includes 2x positive and 2x negative 1.0m cables.

Component specifications

One purchase, no sourcing overhead

Building a home solar battery storage system independently means confirming that battery voltage, BMS communication protocol, inverter charge settings, and cable ampacity all align — typically requiring hours of datasheet review and vendor back-and-forth. This kit removes that burden: the Discover 48V LiFePO4 battery, Sol-Ark 18K-2P-LV 18kW hybrid inverter, and interconnect cable set are bundled because they are confirmed as electrically and communicatively compatible, requiring no custom configuration to establish power delivery or BMS communication.

Who this kit is for

• Large residential homes — 18kW of continuous inverter output supports high-demand loads including central AC, well pumps, and luxury kitchen appliances simultaneously.
• Tesla Powerwall alternative seekers — buyers who want a UL-certified LiFePO4 battery with a 10-year warranty and 100% usable capacity, without proprietary ecosystem lock-in or installer-only configuration.
• Residential off-grid solar installations — Large PV arrays — ideally paired with 10–25kW PV systems for complete energy independence in high-consumption estates.
• Emergency preparedness — the 4ms–5ms inverter transfer time and 16.08 kWh of fully usable storage sustain critical loads through extended outages without a generator.
• Multi-battery system starting point — the LYNK port and parallel scaling capability (up to 579.6 kWh per gateway) make this kit a practical first module in a larger whole-home battery backup system.

How the components connect

The Discover Helios battery connects to the Sol-Ark 18K inverter via the included 950-0070 2/0 AWG cable set. The Sol-Ark inverter manages PV charging (up to 350A continuous charging from PV, grid, or generator), and AC load output simultaneously. The battery's GEN-4 BMS communicates state of charge, temperature, and cell balance data over the LYNK port, while the Sol-Ark's RS485/CAN interface enables closed-loop charge management when paired with Discover's optional LYNK II Gateway.

Items you will likely need to complete the installation: a DC breaker or fuse between battery and inverter, an AC load center or breaker panel, PV array with appropriate string wiring, conduit, and an optional rackmount enclosure such as the Discover AES Slimline. Contact the A1 SolarStore team for a personalized balance-of-system checklist.

Why choose this solar ESS kit?

Sourcing a 18KW inverter and a 16kWh LiFePO4 battery independently typically means verifying communication protocol compatibility, matching charge parameters, and sizing interconnect cables — all before a single wire is run. This kit bundles components that are factory-confirmed compatible, backed by a 10-year Discover battery warranty and dual UL certifications across both main units. For homeowners comparing residential solar battery backup systems or evaluating off-grid storage options, it offers a credentialed, pre-engineered path to installation without the research overhead of assembling a system from scratch.