Fortress Power, eFlex 5.4 kWh, LFP battery, 105 AH

Compact | Reliable | Wall-Mountable | 10-Year Warranty

This 5.4kWh Lithium Iron Phosphate (LFP) Battery offers dependable, high-efficiency energy storage in a sleek, space-saving format. With a 105Ah capacity and an included A14 wall-mount bracket, it's engineered for easy vertical installation in residential, commercial, or off-grid energy systems.

Protected by a durable enclosure and backed by a maximum 10-year warranty, this battery is ideal for scalable solar storage or backup applications where footprint, safety, and reliability matter.

Key Features:

• Total Energy Capacity: 5.4kWh
• Rated Capacity: 105Ah
• Battery Chemistry: Lithium Iron Phosphate (LFP) – known for long cycle life and thermal stability
• Wall-Mount Ready: Includes A14 bracket for clean, secure vertical installation
• Max. Warranty: Up to 10 years (manufacturer-backed)
• Modular Design: Easily expandable for larger systems
  

Specifications:

• Nominal Voltage: ~51.2V
• Energy: 5.4kWh
• Capacity: 105Ah
• Cycle Life: ≥6000 cycles @ 80% DOD
• Mounting: Wall-mountable (A14 bracket included)
• Enclosure Rating: Typically IP65 (model dependent)
• Dimensions (L x W x H): 21.5 x 17.5 x 7.2 inches
• Weight: 116 lbs

What’s Included:

• 1x 5.4kWh LFP Battery (105Ah)
• 1x A14 Wall Mount Bracket
• Installation hardware & documentation (if provided)
  

Ideal Applications:

• Residential solar battery storage
• Off-grid or hybrid systems
• Compact utility storage
• Scalable battery arrays for commercial use