Expandable up to 80+ kWh, the ETHOS battery adapts to your energy needs—while the APEX-6.5K inverter manages power from solar, battery storage, the utility grid, and a generator. Its 120/240Vac split-phase output makes it ideal for home backup, energy savings, and off-grid energy systems.

The APEX-6.5K delivers 6,500W of rated output power with up to 13,000VA of maximum output power. Dual solar inputs provide up to 10,000W of combined PV input capacity, while RS485 and CAN communication support coordinated operation between the battery and inverter.

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

Compatibility

Integrated BigBattery Energy Storage System:

• ETHOS Battery System + BigBattery APEX-6.5K Hybrid Inverter

Expandable & Flexible:

• Scalable ETHOS battery capacity up to 80+ kWh
• Supports up to six APEX-6.5K inverters in parallel for increased output capacity
• Three or more parallel APEX-6.5K units can be configured for three-phase output

Key Features

• Complete ESS Solution — BigBattery battery and inverter components combined into one scalable energy system
• 6,500W Hybrid Inverter — Provides 6,500W of rated output and up to 13,000VA of maximum output power
• 120/240Vac Split-Phase Output — Supports standard 120V and 240V residential loads
• Dual Solar Inputs — Two independent MPPT inputs support up to 5,000W each for 10,000W of combined PV input capacity
• Flexible AC Input — Separate grid and generator inputs provide greater control over backup charging and energy management
• High-Capacity Charging — Supports up to 140A of solar charging and up to 80A of grid or generator charging
• LiFePO4 Battery Chemistry — Safe and stable lithium technology designed for a long service life
• 6,000+ Cycle Life — Built for years of daily use and long-term energy savings
• Advanced System Protection — Protection against overvoltage, undervoltage, overcurrent, short circuits, excessive temperature, and inverter overload
• Battery Communication — RS485 and CAN communication support coordinated operation between the ETHOS battery and APEX inverter
• Parallel Expansion — Connect up to six APEX-6.5K units to increase system output capacity
• Pure Sine Wave Output — Delivers clean and stable AC power for sensitive household equipment
• Intelligent Cooling — Fan-controlled cooling helps maintain efficient inverter operation

A complete, scalable energy storage system built for independence, reliability, and long-term performance—with BigBattery components, protection, support, and engineering you can trust.