Stackable All-in-One ESS 3.6kWh +6kWh with wide grid input Energy Storage System

Meet the RSN Stacked Series by RSUN, a sleek, modular home energy storage solution designed to save space and maximize solar efficiency. Offering 3kW or 5kW output and expandable storage up to 15.36kWh, it keeps your home powered day and night with safe, long-lasting LiFePO₄ batteries.

With built-in WiFi and Bluetooth, you can easily track performance and control the system from anywhere. Simple to install, elegantly designed, and built for independence, the RSN Series brings smart, reliable power to today’s energy-conscious homes.

FEATURES:

PRODUCT OVERVIEW:

SPECIFICATIONS:

FAQ:

Q1: Can I try a sample first?
A: Definitely! Single units or mixed models are welcome.

Q2: How soon will my order arrive?
A: Samples: 5 - 7 days. Bulk orders: about 3 - 4 weeks.

Q3: What’s the minimum order?
A: Just 1 unit, perfect for testing or small projects.

Q4: How do you ship?
A: By express courier or sea freight; timing depends on your region.

Q5: How do I place an order?
A: Share your needs, get a quote, confirm the order, and production starts.

Q6: Can I add my branding?
A: Yes, full OEM customization is supported.

Q7: What warranty comes with the UPS?
A: 5–10 years depending on the model and your agreement.

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.