Frequently Asked Questions

Products and Systems

ZZLYSUN is a professional solar power system manufacturer, providing complete on-grid, off-grid, and hybrid solar and energy storage solutions for residential and commercial applications.

We offer three main types: on-grid (grid-tied), off-grid, and hybrid (solar + battery storage) systems.

On-grid systems connect to the utility grid; off-grid systems run independently with battery storage; hybrid systems combine solar, battery, and grid connection for backup and savings.

We provide energy systems from 15kW to 150kW, suitable for homes, small businesses, and large commercial/industrial projects，for large-scale industrial and commercial projects, ZZLYSUN provides containerized energy storage systems ranging from 150kW to 1MW.

We supply both complete systems and individual components, including inverters, batteries, PV modules, and mounting structures。

Batteries and Energy Storage

We use lithium iron phosphate (LiFePO4) batteries, known for safety, long cycle life, and high efficiency.

Our LiFePO4 batteries typically deliver 6,000+ charge cycles at 80% depth of discharge, which translates to approximately 10–15 years of service life under normal operating conditions. With built-in BMS protection, proper use, and good maintenance, you can expect stable, long-lasting performance year after year.

Yes. Our battery systems are designed with modular expansion in mind. You can start with a smaller capacity and easily add more battery units later as your energy needs grow — without replacing the entire system. This makes our solutions flexible and cost-effective for both current and future requirements.

Our lithium batteries hold major international certifications, including CE, IEC 62619, UN38.3, and MSDS, ensuring safety, quality, and compliance for global shipping and installation. If you need certification documents for a specific destination market, please contact us and our team will provide the relevant certificates.

Company and Factory

We are a manufacturer with our own production facilities. This allows us to control quality at every stage, offer competitive factory-direct pricing, and provide flexible OEM/ODM services. 

Our factory is located in Henan, the central region of China. With its well-connected transportation network and low-cost labor force, we can offer our customers competitive prices for our products.

Our company has been deeply involved in the new energy industry for over 10 years and has served more than 300 domestic and foreign clients. The high-quality products and service team have received great praise from our customers.

Yes, you are very welcome! We warmly welcome distributors, installers, partners, and customers from around the world to visit our production facilities. You can see our manufacturing process, quality control, and product line firsthand.

Please contact us in advance with your schedule and travel details, and our team will help arrange the factory tour, pick-up, and any assistance you need.

Cooperation

We offer flexible MOQs. For standard products, the minimum order quantity is low — even a single set is acceptable for testing. For OEM/ODM orders, the MOQ may vary depending on customization requirements. Please contact us with your needs, and we will provide you with a detailed quotation.

Yes, we provide comprehensive OEM/ODM services. From custom logos, packaging, and product appearance to specification customization and system design, we help you build your own brand. With our factory and R&D team, we can turn your ideas into market-ready products — with flexible MOQs and reliable quality.

Absolutely! We welcome distributors, installers, wholesalers, and brand owners worldwide to join our dealer network. As a ZZLYSUN partner, you will enjoy factory-direct pricing, flexible MOQs, OEM/ODM support, and professional marketing and technical backing.

Contact us now, tell us about your market and business, and let’s start a long-term, win-win partnership.

For standard products, the lead time is typically 7–15 working days. For OEM/ODM or large-scale orders, it may take 15–30 days depending on customization and order quantity. We will confirm the exact delivery time when we send your quotation.

Certification and Logistics

Our products hold major international certifications, including CE, TÜV, IEC 62109, IEC 61730, RoHS, ISO 9001, and UL (where applicable). For lithium batteries, we also provide UN38.3, MSDS, and other shipping and safety documentation. Each product is tested to meet the standards required for its target market.

We ship worldwide. With rich export experience and reliable logistics partners, we deliver to customers across Europe, Southeast Asia, the Middle East, Australia, Africa, and the Americas. Simply tell us your location, and we will confirm shipping options and estimated delivery time.

Yes. We provide comprehensive installation support, including detailed user manuals, wiring diagrams, and remote technical assistance via email or video call. For larger or complex projects, our engineers can also offer on-site support to ensure everything runs smoothly.Our after-sales team is committed to resolving any issues quickly, so you can rely on us long after the sale.