EP Cube Battery Module 3.3 kWh | B3G Lithium Iron Phosphate Energy Storage

EP Cube Battery Module 3.3 kWh – B3G | Scalable LiFePO₄ Energy Storage

The EP Cube B3G 3.3 kWh Battery Module is the foundation of Canadian Solar’s EP Cube energy storage system — a reliable, high-efficiency solution for homeowners and installers seeking modular solar battery performance. Designed for plug-and-play stacking and long-term durability, each module uses LiFePO₄ (Lithium Iron Phosphate) chemistry to deliver exceptional safety, longevity, and depth of discharge in residential solar and backup applications.

Built to work seamlessly with the EP Cube Smart Gateway and Hybrid Inverter, the B3G module is a critical part of a complete home energy ecosystem. It offers 3.3 kWh of usable capacity per unit, and up to six modules can be stacked for nearly 20 kWh of scalable storage — making it perfect for custom solar projects that balance budget, space, and power needs.

Key Benefits

• Modular Design: Easily expand system capacity from 3.3 kWh to 19.9 kWh by stacking up to six B3G modules.

• High Efficiency: Round-trip efficiency above 95 % for minimal energy loss and maximum savings.

• Safe LiFePO₄ Chemistry: Superior thermal stability and non-flammable design for residential safety.

• Long Cycle Life: Over 6,000 charge/discharge cycles for 10 + years of reliable operation.

• Plug-and-Play Stacking: Quick installation with no extra wiring — modules lock and communicate automatically.

• Seamless Integration: Fully compatible with EP Cube Hybrid Inverter and Smart Gateway for intelligent energy management.

• Outdoor Rated: IP65-sealed enclosure for indoor or outdoor installations.

Applications

Ideal for residential solar plus storage systems, off-grid cabins, and backup power solutions, the EP Cube B3G Battery Module provides dependable energy when the grid goes down and optimized self-consumption when it doesn’t. Whether you’re building a new solar installation or retrofitting an existing array, the B3G delivers clean, silent, and low-maintenance power.

Technology & Design

Each B3G module contains advanced LiFePO₄ cells managed by an integrated Battery Management System (BMS) that controls voltage, temperature, and current for optimal performance. The stacking architecture allows for tool-free assembly and automatic address recognition between modules, reducing setup time and installation costs. Communication with the EP Cube Smart Gateway enables dynamic load balancing, state-of-charge reporting, and firmware updates to keep the system running efficiently for years.

Specifications

• Model: B3G Battery Module

• Usable Capacity: 3.3 kWh per module

• Nominal Voltage: 51.2 V DC

• Chemistry: LiFePO₄ (Lithium Iron Phosphate)

• Cycle Life: ≥ 6,000 @ 80 % DoD

• Scalability: 1 – 6 modules (3.3 – 19.9 kWh total)

• Operating Temperature: –4 °F to 122 °F (–20 °C to 50 °C)

• Enclosure Rating: IP65 weather-resistant

• Certifications: UL 1973, UL 9540, UL 9540A, CEC listed

Why Choose EP Cube by Canadian Solar

The EP Cube B3G Battery Module represents Canadian Solar’s commitment to safety, scalability, and performance. With its modular form factor, UL certifications, and smart communication capabilities, it provides homeowners with a future-proof path to energy independence.

When paired with the EP Cube Hybrid Inverter and Smart Gateway, the B3G forms a complete solar storage ecosystem capable of optimizing self-consumption, lowering utility costs, and keeping critical loads powered through every condition.

EP Cube B3G — smart, safe, and scalable energy for the modern home.