Big Battery | NEXUS + EG4 12000XP Power System The BigBattery NEXUS + EG4 12000XP Power System is a powerful, all-in-one home and off-grid energy solution that combines the 48V 14.3kWh NEXUS LiFePO4 battery with the EG4 12000XP hybrid inverter. This setup delivers 14.3kWh of energy storage and a robust 12,000W split-phase AC output, providing reliable, scalable backup or off-grid power for homes, cabins, and small businesses. Designed for efficiency and longevity, it features advanced CATL LFP cells, intelligent battery management, and high solar input capacity for energy independence. KEY FEATURES 14.3kWh energy storage with long-lasting LiFePO4 chemistry 12,000W continuous split-phase output (120V/240V) Supports grid-tie, off-grid, and hybrid configurations 15,000W max solar PV input with dual MPPT tracking 99% MPPT efficiency and 0.99 power factor 7,000+ cycle lifespan with CATL cells Parallel operation for system expansion Full smart BMS with CAN/RS485 communication Ideal for residential, commercial, or backup applications Specifications AC INPUT Nominal AC Voltage: 120/240VAC | 120/208VAC (L1/L2/N required) Frequency (Grid | Generator): 60 Hz (Default) | 50 Hz (Configurable) Max. Continuous AC Current (Grid | Generator): 100A @ 240VAC | 62.5A @ 240VAC Max. AC Input Power: 24000W AC Bypass (Grid | Generator): 100A | 90A Recommended Generator Capacity: 6000W – 15000W AC OUTPUT Output Voltage: 120/240VAC | 208VAC Output Frequency: 60 Hz (Default) | 50 Hz (Configurable) Max. Continuous Output Current: 50A @ 240VAC | 57.7A @ 208VAC Nominal Output Power (without PV): 12000W @ 240V | 12000W @ 208V Nominal Output Power (with PV): 12000W @ 240V | 12000W @ 208V Max. Continuous Wattage: 12000W (L1/L2) | 6000W (L1-N/L2-N) Surge Capacity: 18000W (5 sec) | 15000W (10 sec) Power Factor: 0.99 Total Harmonic Distortion:
