2x Nexus + EG4 6000XP

Product Summary: The BigBattery NEXUS™ ESS combines high-capacity 15kWh LiFePO₄ battery modules with the EG4 6000XP hybrid inverter to deliver a powerful, scalable energy solution for both on-grid and off-grid applications. Designed for flexibility and performance, this system provides 6,000W split-phase output per inverter with up to 8,000W PV input, making it ideal for home backup, energy savings, and full off-grid operation.       Expandable from 15kWh up to 225kWh and scalable up to 18kW output, NEXUS grows with your energy needs while maintaining reliable, efficient performance. With advanced battery technology, fast UPS switching (15-30ms), and intelligent energy management, this system ensures seamless power during outages and optimized daily usage.   Built with safe LiFePO₄ chemistry, integrated system protection, and U.S.-supported engineering, NEXUS delivers a dependable, maintenance-free energy storage solution. Ships From: Texas, USA Warranty: 12 Years (Battery), 10 Years (Inverter) Support: Lifetime USA-Based Tech Support   Compatibility Integrated System: NEXUS Battery Modules + EG4 6000XP Hybrid Inverter Expandable System Design: Scales from 15kWh to 225kWh Supports multiple inverters up to 18kW output Compatible with off-grid installations Key Features 15kWh LiFePO₄ Battery Modules – Safe, high-capacity lithium storage with long lifespan 6,000W Output per Inverter – Reliable split-phase power for residential applications 8,000W PV Input – Efficient solar harvesting with dual MPPT inputs 6,000+ Cycle Life – Built for long-term performance and daily energy use Advanced BMS Protection – Full protection against voltage, current, and temperature risks UPS Backup (15-30ms) – Seamless transition during grid outages Modular Expansion – Easily scale storage and output as energy demands grow Smart Energy Management – Supports load control, AC coupling, and peak shaving Built-In Breakers & Safety – Simplifies installation and enhances protection Remote Monitoring – Track system performance and manage settings from anywhere Maintenance-Free Operation – No routine servicing required A scalable, high-performance energy storage system built for reliability, flexibility, and energy independence-with the support and performance you can trust. BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade.  Introducing the Nexus Sleek & Compact Design Our stackable, compact design comes with all the hardware you need for a straightforward setup, letting you get your off-grid system up and running efficiently in less time. Engineered for reliability in any off-grid environment, it delivers consistent power when you need it most. Off-Grid Energy Reliability With 300Ah of capacity, 140A max continuous discharge, and peak support up to 270A, NEXUS handles high-demand loads with ease. NEXUS’s smart thermal management enables charging from 32 °F to 113 °F and discharging down to -4 °F, making it a true all-weather energy solution. Modular ESS That Grows With You NEXUS supports parallel expansion up to 15 units, offering 225kWh total capacity per inverter. With RS485, CAN, and RJ45 communication ports, it’s ready to integrate seamlessly into new or existing inverter systems—ensuring full system transparency, automation, and control.         Legacy Product Parallel Compatibility The NEXUS is compatible and parallel-able with all existing KONG and GRIZ products purchased between 2019-2024.