This unit comes with a 5-year limited warranty.

Experience unmatched, California-ready performance with the Yoshino B4000 SST Solid-State Portable Power Station — a next-generation CARB-compliant portable generator alternative built for home backup and off-grid reliability. Delivering a massive 4000 W of pure-sine inverter output and 2611 Wh capacity, it powers refrigerators, tools, and electronics with ease, making it ideal for power outages, RV travel, or jobsite use.

Powered by Li-NCM solid-state battery technology, the B4000 offers up to 2.5× higher energy density than conventional lithium units, ensuring cleaner, safer energy storage in a compact, durable design. Its 20 ms UPS auto-switch guarantees seamless power during blackouts, while quiet operation and zero emissions make it a quiet inverter generator solution fully legal across California.

Recharge to 80 % in only 90 minutes via 1800 W AC input, or connect to solar for efficient off-grid charging. With over 4000 charge cycles and reliable performance down to –0.4 °F, the B4000 is engineered for 10 years of dependable service. ETL-certified to UL 2743 standards and backed by Yoshino’s BMS safety system, it’s the ultimate solid-state power station for homes, RVs, and emergency preparedness — available with free local delivery from Deploy Power.