
HELIOS ESS
A robust and scalable battery system designed for solar installers, EPCs, and integrators, HELIOS ESS delivers energy storage for off-grid, backup, rural electrification, and light-commercial applications.
GREAT PRICE, IMPRESSIVE FEATURES, TOP PERFORMANCE.
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.
Hassle-Free Permitting
Hassle-free permitting with with UL 9540*, UL 9540A, and UL 1973 certifications.
*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. Closed-loop communication with EG4, Schneider, Sol-Ark, Victron, and Growatt inverters.
Remote Monitoring
Access live performance data and manage your HELIOS system from anywhere through the Lynk Cloud platform (LYNK required).
Integrated Self Heating
Built-in self-heating system operates automatically from -25°C (-13°F) to 8°C (46.4°F), ensuring reliable performance and faster warm-up in cold environments.
Install Multi-Battery Systems Quickly
With a pre-wired battery-to-battery parallel connection kit and inverter cable kit - no cutting or crimping required.
Customize Battery Layouts
With optional quick connect terminals that let you crimp custom length cables.

Deliver the Best Cost per
kWh for Your Clients
High Energy Density - 16 kWh of energy storage per battery saves you money.
Scalable Architecture - Expandable to 580 kWh to meet growing residential or light-commercial demands.
Reliable Performance - 10-year workmanship warranty and a 93 MWh energy throughput performance guarantee.
Easy Installation, Indoors or Outdoors

LYNK II Gateway
Enhance HELIOS with relay controls and remote access.
LYNK II Communication Gateway aggregates and displays in real-time the State of Charge for HELIOS ESS. Unlock the full potential of HELIOS batteries by enabling them to optimize the charging configurations of hybrid inverter-chargers and solar charge controllers.
Turn a good solar system into a great one with up to 25% improvement in 0% to 100% SoC recharge time. Remotely monitor SoC and data log multiple sites using the data monitoring services offered by inverter systems.
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