The EG4 12000XP delivers up to 12,000W of continuous 120/240V split-phase output with 15,360W of surge capacity for approximately 10 seconds. Its two high-voltage MPPTs can utilize up to 24,000W of solar power, providing substantial charging capacity for large solar arrays and expandable battery banks.

Paired with the NEXUS 2—featuring 16kWh of LiFePO₄ storage, 314Ah capacity, 150A continuous discharge, and up to 7.6kW of continuous battery power—the system provides dependable energy for household essentials, appliances, pumps, tools, and other off-grid loads. Its 270A one-second peak discharge rating supplies additional current for short equipment-startup demands.

The NEXUS 2 features an integrated BMS with multiple safety redundancies, RS485 and CAN communication interfaces, and a rugged IP54-rated floor-standing enclosure suitable for indoor or outdoor battery installation. Its advanced LiFePO₄ cells are rated for more than 8,000 cycles, providing over 12 years of service when cycled daily under appropriate operating conditions.

The 12000XP can operate entirely off-grid or use grid and generator input for supplemental charging and load support. Its smart-load connection supports configurable load shedding, AC coupling, or power management for selected appliances. Plug-in Wi-Fi connectivity enables remote monitoring and adjustments through the EG4 app and EG4 Monitor Center.

Ships From: Texas, USA
Warranty: 12 Years (Battery), 5 Years (Inverter)
Support: Lifetime USA-Based Tech Support

Compatibility

Integrated & Optimized System:

• BigBattery NEXUS 2 48V LiFePO₄ Battery + EG4 12000XP Off-Grid Inverter
• RS485 and CAN interfaces for communication-ready integration
• Compatible with supported closed-loop battery communication profiles
• One NEXUS 2 supports up to 7.6kW of continuous battery-powered output
• Two NEXUS 2 batteries are recommended to support the inverter’s full 12kW output

Expandable & Flexible:

• Expand the NEXUS 2 battery bank up to 15 batteries in parallel
• Maximum battery configuration rated at up to 240kWh
• Parallel up to 16 EG4 12000XP inverters for larger installations
• Supports solar, battery, grid-assisted, and generator-assisted operation
• Supports smart-load management and AC coupling
• Suitable for homes, cabins, workshops, and high-demand off-grid systems

Key Features

• Complete Off-Grid ESS Solution – High-capacity battery and inverter system designed for scalable energy independence
• 12,000W Continuous Output – Powerful 120/240V split-phase output for residential and demanding off-grid loads
• 15,360W Surge Capacity – Supports short-duration startup demands for approximately 10 seconds
• 24,000W Utilized PV Input – High solar capacity for powering loads and rapidly charging the battery bank
• Up to 28,000W Recommended Solar Input – Supports oversized solar arrays for improved production conditions
• Dual High-Voltage MPPTs – Provides flexible solar-array configuration across four PV inputs
• 100–480VDC Solar Input Range – Enables efficient array design with reduced DC cable requirements
• 16kWh LiFePO₄ Battery – High-capacity energy storage with a 314Ah rating
• 7.6kW Continuous Battery Power – Reliable output from each NEXUS 2 battery
• 150A Continuous Discharge – Supports demanding household and off-grid equipment
• 270A Peak Discharge – Provides one-second startup support for short surge loads
• 8,000+ Battery Cycles – Engineered to provide more than 12 years of daily cycling
• Integrated Battery Management System – Multiple safety redundancies protect the cells and connected equipment
• Fast Transfer Time – Less than 10ms with a single inverter to help maintain power during an AC-source interruption
• 100A Grid Bypass – Supports substantial grid-assisted load capacity
• Generator Integration – Compatible with recommended generators from 6,000W to 15,000W
• Smart-Load Management – Supports load shedding, AC coupling, and configurable appliance control
• Remote Wi-Fi Monitoring – Monitor and adjust the inverter through EG4 software
• Expandable Battery Storage – Connect up to 15 NEXUS 2 batteries in parallel
• Expandable Inverter Output – Parallel up to 16 EG4 12000XP inverters
• Indoor/Outdoor Battery Installation – Rugged IP54-rated, floor-standing battery enclosure
• Maintenance-Free Operation – Long-lasting LiFePO₄ chemistry without routine servicing

A high-powered and expandable off-grid energy system engineered for substantial solar production, long-duration battery storage, dependable backup power, and lasting energy independence.