Product Summary:

The BigBattery APEX 6.5K Hybrid Inverter is a rugged, off-grid-ready solution engineered for reliable energy independence. Delivering split-phase 120/240V pure sine-wave output, it efficiently powers homes, cabins, and remote systems with clean, stable energy.

Designed to work seamlessly with modern LiFePO₄ battery systems, the APEX 6.5K supports both solar and generator inputs for continuous, all-day operation. With an 80A pass-through for large appliances and critical loads, it ensures dependable performance when it matters most.

Built for real-world conditions, the APEX features a durable, outdoor-ready enclosure, wide operating temperature range, and installer-friendly design-making it a reliable, efficient choice for off-grid and backup power applications.

Ships From: Texas, USA
Warranty: 5 Years
Support: Lifetime USA-Based Tech Support

Compatibility

Closed-Loop Communication with Batteries (Off Grid Non-UL 9540 Installs)

BigBattery NEXUS, ETHOS, HUSKY2 INV
EG4 280Ah All Weather, 280Ah Indoor, 314Ah All Weather, 314Ah Indoor

Power Compatibility:

Works with 48V battery systems
Supports off-grid and hybrid installations
Compatible with solar + generator input setups

Key Features

6.5kW Output Power – Reliable energy for residential and off-grid applications
Split-Phase 120/240V Output – Powers both standard and heavy-duty appliances
Pure Sine Wave Output – Clean, stable electricity for sensitive electronics
Solar + Generator Input – Flexible energy sources for continuous operation
80A Pass-Through Capability – Supports high-demand loads and appliances
Indoor Installation Ready – Designed for installation in garages, utility rooms, and protected environments
Wide Temperature Range – Reliable performance in varying climates
Installer-Friendly Design – Bottom-entry wiring for simplified installation
Smart Protection Systems – Built-in safeguards for safe, stable operation