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BigBattery
EG4 18kPV + BigBattery ETHOS ESS Bundle – Complete Home Energy Storage System
DK-BNDL-B0004-10
Part of EG4 18kPV + BigBattery ETHOS ESS Bundle – Complete Home Energy Storage System
$9,151.70 each
In stock
Distributor pricing and stock: call 678-940-9002 or email sales@discountkings.net.
About this product
Use Cases
Ideal for homeowners seeking whole-home backup power, reducing utility bills through energy storage, maximizing solar self-consumption, preparing for severe weather and grid outages, increasing energy independence, or building a scalable home energy system that can expand as household energy demands grow.
BigBattery Ethos Stackable Battery
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.
EG4 18kPV - Still Worth It In 2025?
The EG4 18KPV has been a powerhouse inverter for off-grid and hybrid solar setups, but with new products solving some of its challenges, is it still worth it in 2025? In this review, we break down its pros and cons, ease of use, setup complexity, and cost. Plus, we compare it to newer EG4 models.
This video reviews the BigBattery ETHOS home battery system and walks viewers through the full installation process from start to finish. The presenter highlights the battery's slim, space-saving design, ability to expand over time, and suitability for both indoor and outdoor installations. Along the way, they share their experience installing the system at their home, discuss what they like most about the product, point out a few areas they feel could be improved, and offer practical tips for anyone considering adding battery storage to their solar setup.
- Reliable Whole-Home Backup with Scalable Energy Storage The EG4 18kPV Hybrid Inverter and ETHOS Energy Storage Bundle is designed for homeowners who want dependable backup power, lower utility costs, and greater energy independence. This complete solution…
- Kit Contents
- Downloads
- Whole-Home Backup Confidence: Keep essential appliances, lighting, HVAC systems, and everyday household loads running during utility outages. The combination of the EG4 18kPV and ETHOS batteries helps maintain comfort and continuity when grid power is…
- Scalable Storage for Changing Needs: Start with the storage capacity that fits your home today and expand over time as your energy needs grow. The modular ETHOS battery design makes future expansion simple without replacing your existing system.
- Clean, Integrated System Design: The all-in-one hybrid inverter architecture reduces system complexity while the ETHOS stackable battery design creates a streamlined installation that looks as good as it performs.
- Remote Monitoring and Control: Monitor system performance, track energy production and consumption, and adjust settings remotely using integrated monitoring platforms, giving you visibility into your home's energy system from virtually anywhere.
- EG4 18kPV Inverter Spec Sheet
- EG4 18kPV Inverter User Manual
- BigBattery ETHOS 48V Spec Sheet
- BigBattery ETHOS 48V User Manual
Documents & manuals
Specifications
| Product type | Solar kit / bundle |
|---|
| Rated Output Power | 12,000W |
|---|---|
| Output Voltage | 120/240V Split Phase |
| Enclosure Rating | NEMA 4X / IP65 |
| Max Charging Current | 250A |
| Expandable Capacity | Up to 76.8kWh per system |
| Monitoring | Integrated Smart BMS and LED Display |
| Protection Rating | IP65 |
| Certifications | UL9540, UL9540A, UL1973, UN38.3 |