HELIOS ESS is a high-performance lithium battery with an intelligent BMS, integrated safety features, and seamless inverter communication — all packaged in an outdoor-rated, scalable, wall-mounted solution designed for backup, off-grid, and distributed energy projects.

Hassle-free permitting with with UL 9540*, UL 9540A, and UL 1973 certifications and reports.*UL 9540 DC ESS 3rd Ed. Pending

Safe by design, safe LFP cells, internal dual-stage fire arrestors, RSD input, high current BMS, DC breaker, layered electrical protection — all tested to UL standard

Fourth Generation BMS with high current Dynamic Charging and Dynamic Top-balancing. 

Seamless inverter integration with a wide range of direct-to-inverter CANbus communication protocols for popular inverter brands.

Easy unboxing and handling with detachable unboxing rope handles. Optional heavy-duty lifting and positioning handles are available.

Flexible mounting options with adjustable feet and an integrated wall mounting bracket, indoors or outdoors.

Install multi-battery systems quickly with a pre-wired battery-to-battery parallel connection kit and an inverter cable kit — no cutting or crimping required.

Customize battery layouts with optional quick-connect terminals that let you crimp custom-length cables.