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Front facing EG4 18kPV inverter next to a 4 stack of EnergyCell 5 Batteries and battery cables underneath

EG4 18kPV Whole Home Energy Storage Bundle with OutBack EnergyCell 5 {BNDL-OB002}

Brand :

$11,877.78
$10,179.77
SKU:
BNDL-OB002

Hybrid Energy Storage Designed for Real Life

The EG4 18kPV inverter paired with the OutBack EnergyCell 5 battery stack creates a powerful and flexible home energy solution designed for homeowners who want reliable backup power, smarter energy control, and long-term energy independence. Build a dependable home energy system designed for backup power, energy independence, and future expansion. This bundle creates a fully integrated Energy Storage System (ESS) that delivers reliable backup power while supporting grid-tied or off-grid applications.

Whether you're looking to reduce reliance on the grid, keep essential appliances running during outages, or build a resilient solar-ready home, this bundle gives you dependable performance with a clean, streamlined installation. With intelligent energy management, scalable battery storage, and all-weather durability, this system is built to adapt to the way you live today while giving you room to grow in the future.

Key Benefits:

    • Expandable Energy Storage: The modular EnergyCell 5 platform allows additional battery modules and multiple battery stacks to be added as energy needs grow, making it easy to increase storage capacity over time

    • High-Performance Solar Production: With three independent MPPTs and support for up to 18kW of usable solar input (21kW recommended), the 18kPV maximizes solar harvest across multiple roof orientations while reducing system design limitations.

    • Intelligent Battery Communication: Closed-loop communication between the inverter and battery system allows automatic battery management, optimized charging performance, and enhanced system protection for long-term reliability.

    • Built for Long-Term Performance: The EnergyCell 5 features lithium iron phosphate (LiFePO₄) cells, an integrated Battery Management System (BMS), active balancing, and a modular design engineered for more than 10 years of service life and up to 8,000 cycles.

    • UL 9540 DC ESS Certified Battery System: The OutBack EnergyCell 5 battery is UL 9540 certified, and when paired with the EG4 18kPV inverter, it forms a tested Energy Storage System (ESS) designed to support code-compliant residential backup and storage installations.

 

Use Cases:

Ideal for whole-home backup power, hybrid solar systems, energy cost reduction, and homeowners looking for greater energy security, this bundle provides a dependable and expandable solution that supports both everyday energy needs and unexpected outages.

 

Tech Specs:

EG4 18kPV Hybrid Inverter 

    • Outdoor Rating: NEMA 4X

    • Peak Power w/ PV: 14,700W (10 min), 15,500W (5 min)

    • Continuous Output Power: 12,000W

    • Max Charge / Discharge Battery Current: 250A

Outback Power EnergyCell 5 Battery

    • Continuous Charge / Discharge Power: 5kW per battery

    • Outdoor Rating: IP65

    • Stack Support: Automatic identification and addressing

    • Safety Features: Internal fire extinguishing modules

Please Note: Lifetime Customer Support is based in Texas and available via phone and email. We strongly recommend using a certified solar installer and/or master electrician for professional installation. Please note that additional components may be required for your installation.

Have questions or need assistance? Our support team is here to help! Give us a call at 903-441-2090.

Product Image Product Information
EG4 18KPV Hybrid Inverter | All-In-One Solar Inverter | 18000W PV Input | 12000W Output | 48V 120/240V Split Phase | EG4-18KPV-12LV

1x EG4 18kPV Hybrid Inverter
End Clamp for Mini Rail 30mm close up view

1x Outback Power BMS & Junction Box
Front and rear view of BlueSun 460W Bifacial Solar Panel pallet quantity

4x Outback Power EnergyCell 5 Battery

1x Outback Power EnergyCell 5 Battery Base

1x 4/0 AWG Battery to Inverter Cable | Red and Black

 

Relevant Videos

Outback Power EnergyCell 5 - Overview & Features

In this video, we provide an overview of the Outback Power EnergyCell 5, a lithium iron phosphate battery designed for residential and small commercial energy storage applications.

EG4 18kPV Inverter: Honest One-Year Review – Performance, Reliability, and Lessons Learned

Dive into my honest one-year review of the EG4 18kPV hybrid inverter from Signature Solar! After putting this powerhouse through its paces for a full year, processing over 4 MWh of energy and handling 5 MWh from solar panels, I'm sharing the real deal on its performance, reliability, and value. Priced under $5,000, is this the best hybrid inverter for off-grid solar setups in 2025? In this video, I cover: Installation Tips: How I mounted this 120-lb beast and wired it for seamless solar input (up to 18kW capacity – I'm running 9kW!). Real-World Reliability: It powered my home through an 18-day grid outage from Hurricane Helen with zero major failures. Minor glitches? A firmware bug affecting the display and a quirky shutdown with low-heat hair dryers – but easy fixes!

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