B500 Expansion Battery

BLUETTI B500 Expansion Battery – 4,960Wh LiFePO₄ for EP800/EP900 Home Energy Systems

Scale your home or light commercial energy storage with the BLUETTI B500. This 4,960Wh LiFePO₄ expansion battery is designed specifically for the BLUETTI EP800 and EP900 Energy Storage Systems (ESS). One B500 adds roughly a full day of essential home backup; stacking up to four units expands total capacity to nearly 20kWh. It is ideal for grid-tied or off-grid solar setups that need reliable, long-duration backup power.

Key Features

• 4,960Wh Rated Capacity (usable ~4,464Wh at 90% DoD) – Significant runtime extension for essential loads.
• Compatible with EP800 & EP900 – Plug into the BLUETTI home ESS; supports 2–4 B500 packs per system.
• LiFePO₄ Chemistry – Excellent safety, thermal stability, and long cycle life.
• Self-Heating Function – Helps maintain performance in cold weather.
• Weather-Resistant Design – NEMA 4X / IP65 rated for indoor or sheltered outdoor installation (floor or wall mount).
• Quiet Operation – Under 25 dB.
• 10-Year Warranty – Hassle-free coverage with lifetime customer support.
• Certifications – Includes UL1973, UL9540A, UN38.3, CE, FCC, and more.

Ideal For

• Extending runtime of a BLUETTI EP800 or EP900 home battery backup system
• Whole-home or essential-load solar + storage setups
• Grid-tied self-consumption and blackout protection
• Off-grid or hybrid residential energy systems that require modular capacity growth

Specifications

Note: The B500 is an expansion battery for the EP800/EP900 systems only. It is not a standalone power station and is not compatible with portable stations such as the AC200L, AC300, AC500, or Apex 300. Professional installation by a licensed electrician is required.