As more homeowners turn to solar energy for independence and savings, energy storage becomes the critical next step. But what if your needs grow over time? Enter the Canadian Solar battery EP Cube—a modular, compact storage solution built for flexibility. Whether you’re just starting with a small solar setup or planning for a full energy backup system, the EP Cube adapts with you.
At AceFlex, we proudly offer the Canadian Solar EP Cube 3.3 kWh Battery Module—engineered for smart energy storage that grows with your home. In this post, we explore why this modular solution is a game-changer for residential energy systems.

What Is the Canadian Solar EP Cube?
The EP Cube is Canadian Solar’s flagship battery system, designed specifically for residential applications. At its core lies the 3.3 kWh battery module, a high-efficiency lithium iron phosphate (LFP) unit built for durability, safety, and performance.
Each module is a building block. You can stack multiple units—up to six—to achieve a total storage capacity of nearly 20 kWh. That makes it ideal whether you’re covering basic evening usage or backing up your entire home.
Here’s what makes the EP Cube stand out:
- Scalable Capacity: Add modules over time as your energy needs evolve.
- Smart Design: Compatible with Canadian Solar inverters and energy gateways.
- Space-Saving Footprint: Sleek, compact, and wall-mountable—perfect for garages or utility rooms.
Unlike all-in-one batteries, the EP Cube’s modularity allows homeowners and installers to customize the system from day one, with no overinvestment upfront. It’s truly a flexible solution for a dynamic energy future.

The Modular Design: Start Small, Expand Anytime
One of the biggest advantages of the Canadian Solar battery EP Cube is its modular design. Unlike fixed-capacity battery systems, the EP Cube gives you full control over how much energy you want to store—now and later.
Each 3.3 kWh battery module can be installed individually or stacked together, depending on your current energy usage and long-term goals. Planning to store solar energy just for evenings and cloudy days? One or two modules might be enough. Want to power your entire home during outages or go off-grid eventually? Just add more.
With support for up to six modules per stack, you can build a powerful storage solution with a total capacity of 19.9 kWh. That means you can start with a modest investment and scale your system as your household energy needs grow—whether you’re adding electric vehicles, expanding your solar array, or preparing for grid instability.
Key Benefits of the Modular EP Cube Setup:
- Pay-as-you-grow approach—no need to overpay upfront
- Easy expansion without system redesign or rewiring
- Future-proof your setup against rising electricity costs or policy changes
This flexible structure makes the EP Cube not just a product—but a long-term energy strategy.
🛒 Looking to get started? You can find the Canadian Solar EP Cube 3.3 kWh Battery Module in our shop and integrate it into your customized Solar Kit.

Canadian Solar EP Cube 3.3 kWh Battery Module
✅ 3.3 kWh modular battery – scalable up to 19.9 kWh
✅ Safe and durable LiFePO₄ technology for long-term reliability
✅ Compact low-voltage design – ideal for residential energy storage systems
Technical Highlights & Compatibility
The Canadian Solar battery EP Cube isn’t just modular—it’s also packed with cutting-edge technology that ensures reliability, performance, and seamless integration into your solar energy system.
Key Technical Features:
- Battery Type: Lithium Iron Phosphate (LFP) – safer, longer-lasting, and more thermally stable than traditional lithium-ion chemistries
- Usable Capacity: 3.3 kWh per module, expandable to 19.9 kWh per stack
- Round-trip Efficiency: >95% – meaning minimal energy is lost during charging and discharging
- Cycle Life: Over 6,000 cycles – ensuring long-term durability
- Operating Temperature Range: -10°C to 50°C – suitable for most home environments
- Warranty: 10 years – backed by Canadian Solar’s global reputation for quality
But performance is just part of the story.
The EP Cube is also engineered for seamless compatibility with other Canadian Solar components, including:
- ✅ Canadian Solar 7.6kW Hybrid Inverter – ensuring optimized energy flow and backup support

Canadian Solar 7.6kW Hyrbid Inverter
✅ Hybrid functionality for solar production and battery backup (7.6 kW)
✅ Seamless energy transition with fast backup switchover (<30 ms)
✅ Compact single-phase design – ideal for residential PV systems
- ✅ Smart Gateway & Com Light Gateway – enabling real-time energy monitoring, remote control, and grid coordination

Candian Solar Smart Gateway
✅ Connects solar, battery, and grid for smart energy control
✅ Enables real-time monitoring via app (Wi-Fi/LTE)
✅ Ensures seamless backup power during outages

Candian Solar Com Light Smart Gateway
✅ Affordable gateway for basic EP Cube system control
✅ Enables app-based monitoring and operation
✅ Ideal for standard residential installations
This tight integration ensures that your battery system doesn’t just store energy—it communicates and cooperates with the rest of your solar infrastructure. That means higher efficiency, better response to power outages, and full visibility via mobile apps or monitoring tools.
Why It’s Perfect for DIY and Long-Term Planning
If you’re a homeowner planning your own solar setup—or working with an installer on a budget-conscious energy solution—the Canadian Solar battery EP Cube is made for you.
Thanks to its plug-and-play modular design, the EP Cube battery can be installed in stages, which makes it ideal for DIY-friendly projects. Its compact format and intuitive stacking mechanism reduce installation complexity. You don’t need to commit to a large, expensive system from day one. Instead, you can build your storage around your real energy needs—and expand as your consumption grows.
This makes the EP Cube a great match for our customizable Solar Kits at AceFlex. Whether you’re starting with a Basic Kit or planning a full-scale system with Hybrid Inverter and Smart Gateway, the EP Cube integrates seamlessly and scales with you.
Long-Term Planning Benefits:
🔧 Easy integration into new or existing solar systems
📈 Scalable architecture for future upgrades
💡 Ideal for EV charging, smart home expansion, or off-grid backup
🧰 Compatible with AceFlex DIY Solar Kits – tailor-made for flexibility
As your lifestyle changes—maybe you add an EV, build a home office, or install a heat pump—the EP Cube evolves with you. It’s not just a battery; it’s a foundation for your long-term energy independence.
🔗 Explore our Solar Kits that support Canadian Solar components and build your own energy solution at aceflex.us.

Solar Kit Standard
🔆 Standard Solar Kit – Your Custom Solar System in 7 Guided Steps
Design your solar setup with full flexibility and pre-configured mounting: choose solar panels, inverter, battery, mounting kit, wiring essentials, combiner, and accessories – all step by step and fully compatible.
✅ Includes mounting material from K2 Systems for standard layouts
✅ Choose only the components you need
✅ DIY-friendly and pre-checked for compatibility
✅ 🎁 Battery discount included when bundled

Where to Buy: EP Cube at AceFlex
Ready to take control of your energy future? At AceFlex, we offer the Canadian Solar EP Cube 3.3 kWh Battery Module directly through our U.S.-based online shop. As an official solar equipment retailer, we specialize in scalable, high-performance systems for homeowners, installers, and DIY enthusiasts.
- Fast shipping from our U.S. warehouses
- Expert support for system planning and component selection
- Flexible kits that support Canadian Solar inverters, batteries, and gateways
You can purchase the EP Cube as a standalone module or integrate it into one of our customizable Solar Kits—tailored to your project size and roof type.
Explore more Canadian Solar products in our shop:
- Canadian Solar Capacity Extension Kit – Simplifies the expansion process when upgrading your EP Cube beyond its initial configuration.

Candian Solar Capacity Extension Kit
✅ Enables expansion beyond 3 battery modules (up to 6 total)
✅ Required for larger residential storage setups
✅ Seamless integration with EP Cube battery system
- High-Efficiency Canadian Solar PV Panels – Build a full-stack system with robust power generation and reliable storage.

Canadian Solar 450W Solar Panel 108 TOPCon Cells All Black
✅ High efficiency for max power output (450W)
✅ TOPCon technology for superior performance
✅ Sleek all-black design, perfect for any setup
With AceFlex, you’re not just buying a product—you’re building a smart, future-proof energy system backed by expert support.

❓ FAQ – Canadian Solar Battery EP Cube
What is the EP Cube battery from Canadian Solar?
The EP Cube is a modular home battery system by Canadian Solar, based on 3.3 kWh lithium iron phosphate (LFP) modules. You can stack up to six units, giving you nearly 20 kWh of total storage capacity.
How many EP Cube modules do I need?
That depends on your energy consumption. One or two modules are great for basic storage and self-consumption. For whole-home backup or off-grid setups, you can combine up to six modules per stack.
Can I install the EP Cube myself?
The system is designed with modularity and ease of installation in mind. While the physical stacking and cabling are straightforward, we always recommend hiring a certified electrician for the AC connection and grid tie-in.
Is the Canadian Solar EP Cube compatible with other brands?
While it’s optimized for use with Canadian Solar hybrid inverters and gateways, it can be integrated into other systems. However, for the best performance and warranty support, pairing with Canadian Solar components is recommended.
What is the warranty on the EP Cube?
Canadian Solar offers a 10-year warranty on the EP Cube battery module, covering performance and defects.
Where is the Canadian Solar EP Cube available?
You can purchase it directly from our U.S. store at aceflex.us, with fast shipping across the United States and optional integration into DIY Solar Kits.
What is the difference between EP Cube and EP Cube Lite?
The main difference lies in system capacity and design. The EP Cube Lite is a smaller, more affordable version of the EP Cube, typically offering reduced features like lower maximum storage capacity and fewer smart energy management options. The standard EP Cube is designed for full-home backup and larger energy needs.
What is the warranty on the Canadian Solar EP Cube?
Canadian Solar provides a 10-year product warranty on the EP Cube, ensuring long-term reliability and peace of mind for homeowners.
What is the EP Cube?
The EP Cube is a modular, stackable residential battery storage system developed by Canadian Solar. It uses high-efficiency LFP technology and allows users to expand their storage capacity easily over time.
Is Canadian Solar a Chinese company?
Canadian Solar was founded in Ontario, Canada, in 2001. Although it operates manufacturing facilities globally—including in China—it remains a Canadian-headquartered company with a strong international presence.
Conclusion: Build Smarter with the Canadian Solar EP Cube
The Canadian Solar battery EP Cube is more than just a storage unit—it’s a smart investment in your energy independence. With its modular architecture, high efficiency, and seamless compatibility with other Canadian Solar components, the EP Cube offers unmatched flexibility for both new and expanding solar systems.
Whether you’re planning a small residential install or a future-ready energy solution, the EP Cube grows with your needs—efficiently, safely, and sustainably.