Enphase IQ Battery 10C 5kWh Expansion Unit (Domestic Pre-2545) B05-C01-US00-1-3-DOM-2545

The Enphase B05-C01-US00-1-3-DOM-2545 is a 5 kWh lithium iron phosphate (LFP) battery expansion unit designed for use within the Enphase IQ Battery 10C system. This modular battery enables scalable energy storage, allowing flexible system sizing while maintaining high efficiency, safety, and long-term reliability.

This unit includes one 5 kWh battery module and a mounting bracket, providing a compact and flexible solution for expanding energy storage systems. It integrates seamlessly with Enphase microinverter-based systems and supports backup, self-consumption, and grid-interactive operation. 

Important Notes

• Included: ONE 5 kWh battery unit with one mounting bracket
• Not Included: ID cover must be ordered separately (SKU: EN-B10C-NC-0708-O-DOM)
• System Requirement: Each IQBATTERY-10C-1P-NA system MUST include:
  • (2) EN-B05-C01-US00-1-3-DOM
  • (1) EN-B10C-NC-0708-O-DOM
• Serial Identification: This item is identified via serial numbers beginning with 54XXXX where XXXX < 2545, manufactured prior to Nov 10, 2025
• Compliance Notice: This item may NOT be applicable to all Financial AVLs starting Jan 1, 2026
• Domestic Content: This item includes domestic content and, if used in accordance with IRS provisions, may qualify the taxpayer for a Domestic Content Bonus Credit

Key Technology

• LFP Battery Chemistry
  Utilizes lithium iron phosphate chemistry for superior safety, long lifespan, and thermal stability. 

• Modular Expansion Design
  Supports scalable energy storage by combining multiple 5 kWh units to meet system requirements. 

• Integrated Microinverter Architecture
  Designed to work seamlessly with Enphase IQ microinverters for AC-coupled storage solutions.

• Passive Cooling System
  No fans or moving parts, improving reliability and reducing maintenance needs.

• Advanced Safety Compliance
  Evaluated to UL 9540A and uses inherently safe LFP chemistry for enhanced protection. 

Best Uses

• Home Energy Storage Systems
  Expands storage capacity for residential solar systems.

• Backup Power Systems
  Supports reliable backup when configured within a full IQ Battery system.

• Energy Management Applications
  Enables self-consumption and time-of-use optimization.

Warranty

• Battery Warranty: Up to 15 years or 6,000 cycles (60% capacity retention)

Product Specifications

Scalable Energy Storage for Enphase Systems

The Enphase B05-C01-US00-1-3-DOM-2545 provides a flexible and reliable solution for expanding IQ Battery 10C systems, delivering safe, efficient, and modular energy storage performance.

Why Buy From US Solar Supplier

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Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.

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