Global energy transition is accelerating, and demand for energy storage systems in residential and light commercial scenarios is growing more diverse. These systems need to be compatible with rooftop solar for “self-generation and self-consumption”. They also need to cope with complex environments like high altitudes, severe cold, and extreme heat. Meanwhile, they must balance safety, space-saving, and long-term flexibility. The W8-5C Sodium-Ion Energy Storage System is designed to meet these needs. It leverages an IP65 protection rating, a functional BMS (Battery Management System), and wide temperature adaptability to serve as a suitable energy storage solution for outdoor and extreme environments.
I. User-Centric Scenarios and Core Pain Points: Problems Solved by the W8-5C
- Difficult Outdoor Installation + Large Space Occupancy: Traditional cabinets are bulky and hard to install. They’re also prone to damage from wind and rain. Moreover, small households or shops with limited space struggle even more to find a suitable installation spot.
- System Failures in Extreme Environments: Winter’s low temperatures cause power loss. Summer’s high heat triggers protective shutdowns. Additionally, in high-altitude areas (for safe high-altitude operation), air pressure and temperature differences further reduce system stability.
- Concerns About Safety and Compliance: Risks like battery overheating and short circuits are worrying. For users, figuring out how to meet local electrical standards and avoid fires has become a top concern.
- High Costs for Later Capacity Expansion: Undersizing initial capacity leads to retrofitting headaches. Not only do compatibility issues arise, but repeated construction may also be needed. Notably, homestays/B&Bs and small farms often face this problem as their businesses grow.
- Demand for Emergency Power: Keeping critical loads (lighting, routers, security equipment) running during outages has become a “must-have” for households and small businesses.
II. W8-5C: Targeted Design to Address All Energy Storage Pain Points
1. Direct Outdoor Installation + Space-Saving, with Zero Installation Threshold
Safety is the core of energy storage. The W8-5C builds an all-round safety system covering intelligent BMS protection, physical safety, and compliance certification:
- Core Protection: Multi-Layer BMS: Equipped with a high-precision Battery Management System (BMS) that real-time monitors battery voltage, current, and temperature. It automatically triggers overcharge, over-discharge, short-circuit, and high/low-temperature protection to prevent battery malfunctions at the source.
- Emergency Response: Built-In Aerosol Fire Suppression Device: In the event of extreme situations, the fire suppression device activates within seconds to quickly suppress fires, minimizing risks to the greatest extent.
- Compliance Certification: The product meets electrical safety standards of multiple countries, ensuring compliance with industry requirements during installation and use—eliminating user concerns about qualification issues.
2. Wide Temperature Range + High-Altitude Adaptability for Stable Output
Tailored for extreme conditions and high altitudes (for safe high-altitude operation), the W8-5C’s sodium-ion battery works stably from -20°C to 60°C. It maintains performance without power loss in freezing northern winters. It also avoids power limitations in hot southern summers. Plus, its electrical components are optimized for air pressure—ensuring far greater stability than traditional storage in high-altitude areas. This truly enables “year-round, all-region usability”.
3. Triple Safety Assurance: BMS + Fire Suppression + Compliance
- Core Protection: Multi-Layer BMS: A high-precision BMS monitors voltage, current, and temperature in real time. It automatically triggers overcharge, over-discharge, short-circuit, and temperature protection—stopping malfunctions at the source.
- Emergency Response: Built-In Fire Suppression: In extreme cases, the aerosol fire suppressor activates in seconds. This quickly puts out fires and minimizes risks.
- Compliance Certification: The product meets electrical safety standards in multiple countries. This eliminates user worries about qualification issues during installation and use.
4. Flexible Capacity Expansion + Emergency Power
- On-Demand Expansion: Each unit has 7.68 kWh capacity, and up to 20 units can be connected in parallel (max 153.6 kWh). Homestays/B&Bs can add units temporarily during peak seasons. Farms can also upgrade smoothly as production scales—avoiding waste from over-investing upfront.
- Uninterrupted Emergency Power: During grid outages, the system switches to emergency mode automatically. It powers critical loads continuously, solving “power outage anxiety” for households and small businesses.
5. CAN Communication for Smarter Linked Control
The W8-5C supports CAN bus and RS485 dual communication protocols. This allows seamless integration with mainstream inverters and Energy Management Systems (EMS). As a result, it enables intelligent linkage between solar power, storage, and loads. For example, it prioritizes solar use, stores surplus power, and releases it during evening peaks—boosting energy savings further.
IV. Key Specifications at a Glance
| Parameter | Details |
|---|---|
| Chemical System | Sodium-Ion Battery |
| Single-Unit Capacity | 7.68 kWh |
| Parallel Capacity | Up to 20 units (153.6 kWh max) |
| Discharge Temp Range | -20~60°C (extreme temperature adaptable) |
| Protection Rating | IP65 (direct outdoor installation) |
| Safety Configuration | Multi-Layer BMS + Built-In Fire Suppression |
| Communication Protocols | CAN / RS485 |
| Cycle Life | ≥8000 Cycles (80% DoD) |
| Core Advantages | Space-Saving, High-Altitude Adaptability, Emergency Power |
V. Why Choose the W8-5C? Three Core Reasons
- More Reliable Safety: Multi-layer BMS, IP65 protection, and a fire suppressor—all compliant with standards. This gives peace of mind even in extreme environments.
- More Flexible Adaptability: The wall-mounted design saves space. It supports expansion and works for households, B&Bs, and farms. It also operates stably in extreme temps and high altitudes.
- Smarter and Worry-Free: CAN compatibility links with mainstream devices. It automates solar-load coordination, provides uninterrupted emergency power, and needs minimal maintenance.
The W8-5C Sodium-Ion Energy Storage System redefines outdoor and extreme-environment storage—with “safety as the foundation and flexibility as the driver”. Whether for daily household use or light commercial scenarios like B&Bs and farms, it delivers a reliable solution that’s “easy to install, stable to use, and fully protected”.




