Do You Really Need UL Certification to Install Solar Batteries in the U.S.?

We’ve helped many U.S. clients successfully install our 15kWh, 30kWh, and 50kWh lithium solar battery packs over the years — especially in DIY and off-grid solar setups. However, recently we’ve noticed a growing concern among some new customers:

“Does the Docan 51.2V 600Ah 30kWh Plug & Play Prebuilt LiFePO4 Lithium Battery Pack have UL certification? Otherwise, we might not be allowed to install it.”

This question has caught our attention as currently we dont have any UL certificates for our battery packs, especially since many of our long-term U.S. customers have used our solar battery systems without UL certification — and installed them at home with no issues. So why the sudden concern?

What Is UL Certification, and Why Does It Matter?

UL (Underwriters Laboratories) certification is one of the most recognized safety standards for electrical equipment in North America. It ensures that products like solar batteries, inverters, and energy storage systems have been rigorously tested for risks such as fire, electric shock, and mechanical hazards.

In the U.S., some local authorities, solar installers, or utility companies may require UL-listed battery packs — particularly for grid-tied solar systems or when applying for solar tax incentives and permits.

Why Many U.S. Customers Didn’t Need UL Certification Before

The truth is that UL certification for solar battery installation is not a universal requirement. It often depends on:

• Your state and local regulations

• Whether you’re installing an on-grid or off-grid system

• Whether your system is DIY or contractor-installed

• If you're applying for government incentives or utility rebates

Many homeowners use our pre-assembled, plug-and-play LiFePO4 battery systems in non-permitted, off-grid, or backup power setups. In these cases, UL certification is typically not required — especially when:

• Installing in remote areas or off-grid cabins

• Setting up a DIY solar battery backup system

• Connecting directly to the inverter with minimal wiring

What’s Changed Recently?

In recent years, some U.S. states and cities have begun tightening solar installation codes and permitting rules. This means that in certain areas:

• UL-certified solar batteries may be required by inspectors or utilities

• Grid-tied installations and new home construction might need certified components

• You may need UL approval to qualify for federal or local solar programs

This likely explains why more new customers are asking upfront about UL certification.

Our Approach at Docan Power

We understand the importance of both safety and compliance in today’s evolving energy landscape. While our current solar battery packs may not yet carry UL 9540 or UL 1973 certification, we are actively working toward it — especially for future models intended for code-compliant and grid-tied systems in the U.S.

That said, our current 51.2V LiFePO4 battery packs are ideal for:

• DIY home energy storage projects

• Off-grid solar systems

• RV and cabin battery setups

• Backup power solutions for power outages

They’re prebuilt, plug-and-play, and designed for easy installation — just connect to your inverter using the included cables. No advanced wiring or technical setup is needed.

What Should You Do?

If you're unsure whether you need UL certification for your solar battery, we recommend:

• Checking with your local AHJ (Authority Having Jurisdiction)

• Asking your solar installer or contractor

• Letting us know your installation type and state, so we can offer advice

• Exploring off-grid or DIY battery storage options that may not require certification

Let’s Keep the Conversation Going

We’d love to hear from our U.S. clients and partners:
Have you faced similar questions or changes in local regulations? Are you using solar batteries with or without UL certification?

Share your experience in our Docan Amy Group or contact us directly at amy@docanpower.com.

At Docan Power, we’re committed to supporting solar DIYers, off-grid users, and energy storage enthusiasts with reliable, high-performance lithium iron phosphate battery systems. Whether you need a 15kWh, 30kWh, or 50kWh solar battery pack, we’re here to help you power your energy future — safely and affordably.