ESS Energy Storage System Stackable All In One ESS 1200W 4.02kWh Energy Storage System Lithium Battery

ESS Energy Storage System Stackable All In One ESS 1200W 4.02kWh Energy Storage System Lithium Battery

The RSUN Stacked RSN Series is a streamlined residential energy-storage solution built around a flexible, modular battery stack. Its plug-and-play architecture allows each unit to be added or removed with ease, giving homeowners a simple path to expand capacity as their energy needs grow. By storing excess solar power generated throughout the day, it delivers reliable home backup and meaningful reductions in grid consumption.

With built-in WiFi and Bluetooth connectivity, the system offers real-time oversight and control through a mobile app, whether the user is at home or away. Its upright, floor-mounted design keeps the footprint minimal, making it a smart fit for compact indoor spaces while combining dependable performance with modern, intuitive energy management.

PRODUCT OVERVIEW:

SPECIFICATIONS:

RSUN Support & Custom Solutions:

1. Sample Access
   We provide product samples to facilitate testing, technical evaluation, and pre-launch verification, helping clients confirm performance and compatibility before committing to larger orders.

2. Reliable Warranty
   All RSUN products, including UPS units, solar inverters (12V/24V/48V), and charge controllers, come with a clearly defined warranty covering materials and manufacturing defects, reflecting our commitment to consistent quality.

3. Tailored OEM/ODM Services
   Backed by ISO9001 & ISO14001-certified production, RSUN offers end-to-end OEM/ODM solutions, from R&D and circuit design to prototyping, full-scale manufacturing, and quality assurance. With over a decade of global collaboration, we deliver innovation, reliability, and on-time production.

With over 23 years of industry expertise, RSUN POWER is a trusted manufacturer specializing in Uninterruptible Power Supplies (UPS), inverters, and battery solutions. Our state-of-the-art factory spans nearly 20,000 square meters and is equipped with 33 fully automated SMT production lines, over 10 sets of automated insertion equipment, ICT PCB testing systems, ATE automated testing centers, and a dedicated aging workshop to ensure the highest product reliability.

Supported by a team of over 500 skilled professionals, including 30 experienced R&D engineers, we are committed to continuous innovation, superior product quality, and exceptional customer service. RSUN POWER stands as a leading force in the power electronics industry, delivering dependable solutions to customers worldwide.

Our Vision

To become a global leader in the UPS industry by maintaining excellence in technology, R&D capability, manufacturing scale, and modern management practices.

Our Mission

To consistently deliver the most reliable, intelligent, and safe UPS systems, inverters, and battery solutions.
We are committed to positioning China’s UPS industry on the world stage, empowering our employees to achieve personal growth and creating a happier, more fulfilling life through meaningful work.

Since its establishment in 2002, RSUN POWER has steadily grown into a leading manufacturer of UPS systems, inverters, and batteries. Through continuous innovation, global expansion, and investment in advanced manufacturing technologies, we have achieved key milestones that reflect our commitment to quality, reliability, and customer satisfaction. The timeline below highlights the significant stages of our development and the strategic steps that have shaped our success over the years.