• Dagong ESS

5kWh Stackable ESS for Smart Home Energy Independence

What is a 5kWh Stackable ESS?

The 5kWh stackable energy storage system (ESS) is a modular home battery solution designed to meet the growing demand for clean, independent, and intelligent energy use in residential environments.
Each 5kWh module can operate independently or be stacked together to reach up to 80kWh total capacity, allowing users to flexibly configure their system according to household energy demands.

At the heart of this system lies Lithium Iron Phosphate (LFP) cell technology — known for its exceptional safety, long cycle life, and environmental friendliness. Compared to traditional lead-acid batteries, LFP batteries offer higher energy density, faster charging efficiency, and more than 6000 charge-discharge cycles, ensuring reliable operation for over a decade.

The 5kWh stackable ESS supports smart EMS (Energy Management System) control, which intelligently optimizes charging and discharging based on electricity pricing, solar production, and household demand.
When combined with solar PV systems, it allows homeowners to store excess solar energy, use it during the evening or in peak-demand periods, and even serve as a backup power source during grid outages.

This modular, scalable, and intelligent design represents the next generation of home and small commercial energy storage, providing a pathway toward energy independence and greater control over household electricity consumption.

Challenges for 5kWh Residential ESS

While residential ESS technologies have evolved rapidly, several key challenges still exist in the practical application of 5kWh systems.

• Limited Capacity Flexibility

Traditional energy storage systems often feature fixed capacities that may not align with the diverse energy requirements of different households.
For example, a small apartment might need only 5–10kWh, while a large villa with EV charging or air conditioning may require over 50kWh.
The lack of flexibility can result in either underutilization or insufficient storage.

• Thermal and Safety Management

High energy density systems generate heat during charge and discharge cycles. Without proper thermal management and advanced BMS (Battery Management System), safety issues such as overheating or cell imbalance can occur.
A reliable system must therefore include temperature sensors, automatic shutdown features, and heat dissipation design to ensure long-term stability.

• Compatibility with Solar Inverters and EMS Systems

Residential ESS must communicate effectively with inverters and energy management software to deliver optimal performance.
However, communication protocols vary among brands, leading to potential incompatibility or performance loss.

• Installation and Maintenance Complexity

Some traditional storage systems require complicated wiring or configuration, which increases installation cost and time. Users also seek plug-and-play designs that can be easily upgraded or expanded in the future.

Solutions

The solution to these challenges lies in modular stacking architecture, smart BMS balancing, and multi-protocol communication (CAN/RS485).
A well-engineered 5kWh stackable ESS can automatically equalize voltages between modules, control heat generation, and maintain stable communication with hybrid inverters and EMS systems.

This approach ensures high efficiency, strong safety performance, and scalable capacity, perfectly fitting the modern household’s evolving energy needs.

Why Choose Our Energy Storage Solutions?

Dagong ESS is one of the leading manufacturers of modular and scalable energy storage systems in China, offering reliable, efficient, and customizable 5kWh stackable ESS solutions for both residential and light commercial applications.

Each Dagong 5kWh module is designed with:

• LFP cells for enhanced safety and long cycle life;

• Advanced BMS for precise monitoring and protection against overcharge, overdischarge, and short circuit;

• Smart communication interfaces (CAN/RS485) to ensure compatibility with major inverter brands;

• Optional wall-mounted or floor-standing installation to suit diverse building layouts.

The system can be expanded up to 16 modules (80kWh), providing unmatched flexibility for different energy requirements.
In addition, real-time monitoring and cloud-based diagnostics enable users or service teams to track system status, energy consumption, and fault records remotely.

The compact yet robust design, combined with IP65 protection, allows both indoor and semi-outdoor installation.
All systems meet international safety and transport standards, including CE, UN38.3, MSDS, and IEC certifications, ensuring reliability across global markets.

With a focus on quality, scalability, and intelligent control, Dagong ESS stackable batteries empower homeowners to transition toward sustainable energy independence with confidence and convenience.

Applications of Energy Storage Systems in Smart Homes

In modern residential settings, smart home systems and renewable energy technologies are deeply integrated.
The 5kWh stackable ESS plays a vital role in ensuring stability, sustainability, and cost-effectiveness in daily energy use.

• Solar Self-Consumption

By storing excess solar energy generated during the day, homeowners can use it during the night or cloudy periods, maximizing self-consumption rates and reducing grid reliance.

• Emergency Backup Power

During grid outages, the system automatically switches to backup mode, providing continuous power to critical appliances such as lighting, refrigerators, or communication equipment.

• Peak-Shaving and Load Balancing

In regions with variable electricity pricing, the ESS stores energy when tariffs are low and releases it when tariffs rise — achieving peak-shaving and valley-filling, thereby reducing electricity bills.

• Integration with Smart Home Systems

Through EMS and smart control, the battery system can integrate with IoT-based smart home platforms, enabling automated energy scheduling, real-time monitoring, and optimized performance.

• Hybrid and Off-Grid Applications

In remote locations or off-grid homes, multiple 5kWh modules can be combined to form a self-sustained microgrid, providing clean and stable energy for living, farming, or vacation cabins.

Overall, the 5kWh stackable ESS offers a reliable and adaptable solution for sustainable living, combining environmental responsibility with advanced technology.

Dagong ESS Products Showcase

• 5kWh to 80kWh Stackable Household ESS
  Modular design allowing flexible capacity expansion, perfect for home energy storage and small commercial facilities.

• 5kWh–10kWh Wall-Mounted ESS
  Compact, lightweight design ideal for apartments or small houses; supports parallel connection for capacity increase.

• 5kWh–30kWh Rack Battery Cabinet
  Durable, scalable cabinet design suitable for both residential and small commercial applications with extended backup time.

Each of these systems adopts LFP technology, advanced BMS, and intelligent control features, ensuring stable performance and long operational lifespan.

Frequently Asked Questions

Q1: How many 5kWh modules can I stack together?
You can connect up to 16 modules, achieving a total energy capacity of 80kWh depending on inverter specifications.

Q2: Can it work with any solar inverter?
Yes, the system supports major inverter brands such as Growatt, Deye, GoodWe, and Huawei, via CAN or RS485 communication protocols.

Q3: What is the lifespan of the 5kWh Stackable ESS?
The typical service life exceeds 6000 cycles, which equals approximately 10–15 years under normal operation conditions.

Q4: What certifications are available?
Dagong ESS products comply with CE, UN38.3, MSDS, and IEC safety standards, meeting international trade and installation requirements.

Q5: Can the system operate in cold or hot climates?
Yes, it supports a wide temperature range (-20°C to 55°C) with integrated temperature control for stable operation across diverse environments.

Q6: How is it installed?
The stackable modules can be floor-mounted or wall-mounted, offering easy installation, expansion, and maintenance.