In Vietnam, the adoption of grid-tied solar power systems with storage is becoming increasingly popular. However, the market still lacks storage batteries designed to suit the environmental conditions, demand, and equipment in Vietnam. That is why Cergy has researched and developed the APESS 5.2kWh storage battery – a product manufactured to international standards but optimized for the Vietnamese market.

Overview of the APESS 5.2kWh Storage Battery

Optimized – Durable – Safe

The APESS 5.2kWh storage battery is a lithium-ion battery featuring advanced technology, high efficiency, long lifespan, and integrated smart communication ports. With easy integration into residential, commercial, or agricultural solar power systems, APESS is a reliable choice for households, businesses, and installers.

Technical Specifications

Key Advantages of APESS Storage Battery

Ideal capacity for households and SMEs
With 5.2kWh capacity, APESS meets the storage needs of households with solar systems of 3–5kWp. It is also a practical solution for shops, farms, or small-scale businesses seeking to save on electricity and ensure stable operation.

Flexible communication ports
APESS integrates standard communication ports such as USB, RS485, and CAN, allowing easy connection with hybrid inverters such as Growatt, Afore, Deye, Goodwe, and more. This is a big advantage for technical teams needing fast deployment.

Long lifespan – over 6000 cycles
The battery can operate for over 6000 cycles at 80% DOD, helping reduce replacement costs in the long run. With a stable charge/discharge rate of 0.2C, APESS maintains high performance throughout its service life.

Absolute safety with international certifications
Certified with ROHS, UN38.3, and MSDS, the battery meets international standards for fire safety, transportation, and environmental protection.

Why APESS is Ideal for the Vietnamese Market

Optimized for hot and humid climates
The APESS battery offers over 6000 cycles at 80% DOD, tested at 25±2°C, aligning perfectly with Vietnam’s tropical monsoon climate, where average annual temperatures range from 23–30°C. Its intelligent Battery Management System (BMS) ensures stable performance, preventing sudden voltage drops or overheating, even during prolonged use in hot summer conditions.

Moreover, with UN38.3 certification (transport and impact safety) and ROHS compliance (non-hazardous materials), APESS guarantees durable performance even in high-humidity, mountainous, or coastal regions.

Easy installation – Easy operation
Compact size with a 51.2V rated voltage makes APESS a low-voltage battery group – safe for both end-users and technicians. Standard interfaces like USB, RS485, and CAN allow for easy setup, software updates, and integration with popular inverters in Vietnam (Afore, Growatt, Deye, etc.).

The user-friendly design includes an operation display and LED error indicators, making maintenance and daily monitoring simple and efficient, reducing installation time and operational errors compared to complex imported batteries.

Competitive cost – Optimized investment
APESS is designed specifically for Vietnam, avoiding costly import intermediaries, cutting logistics and tax expenses, and tailoring production to local needs. Compared to European or American brands, APESS requires 15–25% lower initial investment while delivering equivalent performance and durability, especially under local climate conditions.

With a lifespan of over 6000 cycles (15–18 years), APESS is a cost-effective choice for households, farms, or SMEs seeking long-term electricity savings without frequent replacements.

Clear warranty – Fast support
Unlike imported batteries requiring overseas warranty handling, APESS is directly distributed and serviced in Vietnam by Cergy. With transparent warranty policies, simple troubleshooting procedures, and local spare parts availability, downtime is reduced from weeks to just 3–5 days.

For dealer partners, Cergy also provides remote and on-site technical support, easing after-sales burdens and building customer trust.

Conclusion

The APESS 5.2kWh storage battery is not just an efficient storage solution but also a smart choice for a sustainable energy future. Specifically designed for Vietnam, it meets performance, durability, and cost optimization requirements.

👉 Don’t miss the business opportunities with this promising battery.
📞 Contact Cergy today for consultation and the best quotation!