Power Your Future with
25-Year Warranty
American-made lithium iron phosphate battery systems engineered for reliability, safety, and longevity.
Energy Storage Solutions
From residential to commercial applications, our LiFePO4 battery systems deliver unmatched safety and longevity.
Guardian Elite 15K
Premium whole-home battery backup with industry-leading warranty
Guardian E2.0
Flexible energy storage for residential and light commercial
Guardian Tower
High-capacity vertical storage for commercial applications
ECHO 3.0 Series
Compact solutions for RV, marine, and off-grid applications
The SunFusion Advantage
Experience the difference of American engineering and manufacturing excellence.
Unmatched Safety
UL 1973, UL 9540, and UL 9540A certified. Our LiFePO4 chemistry is inherently safe with no thermal runaway risk.
- ✓ Fire-resistant design
- ✓ Built-in safety protocols
- ✓ Continuous monitoring
25-Year Warranty
Industry-leading warranty coverage backed by American manufacturing and rigorous quality control.
- ✓ Full parts coverage
- ✓ Performance guarantee
- ✓ US-based support
Made in USA
Proudly manufactured in San Diego, California with domestic and global components.
- ✓ Local manufacturing
- ✓ Quality employment
- ✓ Supply chain security
Our Commitment to You
We understand that choosing an energy storage system is a significant investment. That's why we're committed to providing exceptional service at every step of your journey.
24/7 Support
Always available when you need us, day or night
Expert Installation
Certified installer network across the nation
Dedicated Account Manager
Personal support throughout your ownership journey
Ready to Power Your Future?
Join thousands of homeowners and businesses who trust SunFusion for reliable, safe energy storage.
SunFusion Energy Systems Inc.
American-made energy storage solutions with industry-leading 25-year warranty. Powering homes and businesses with safe, reliable lithium iron phosphate technology.
Contact
- 📍 San Diego, CA
- 📞 1-800-544-0282
- ✉️ info@sunfusion.us
© 2025 SunFusion Energy Systems. All rights reserved. Made with pride in the USA 🇺🇸
How SunFusion can assist you! Watch our explainer video to maximize your investment. you how to get the most for your money.
"Why do we need energy storage and how can we support the grid?"