Frequently Asked Questions

Find practical answers or contact our support team for project-specific help.

Service

How can I choose the right system?

Share your loads, daily energy use, site location and required backup time. Our team will recommend a suitable configuration.

Does ROYALSUN support OEM / ODM?

Yes. Product appearance, labels, packaging, functions and system combinations can be discussed for qualified projects.

What is the difference between off-grid and hybrid inverters?

Off-grid inverters operate independently. Hybrid inverters can coordinate solar, battery and grid power where supported.

How should inverter capacity be selected?

Capacity should cover continuous load, starting surge, voltage and future expansion.

How long can a battery power my home?

Backup time depends on usable battery capacity, load power, inverter efficiency and depth of discharge.

Can battery capacity be expanded later?

Selected models support parallel expansion when the battery model, firmware and installation conditions match.

How many solar panels are required?

Panel quantity depends on local solar hours, daily energy use, array voltage and inverter input limits.

What maintenance is needed?

Keep modules clean, inspect cables and connectors, and check mounting structures periodically.

Our sales and technical support teams are ready to help.