Fortis Series
SHIPPING Q3 2027 • NOW QUOTING
Non-Flammable Li-Ion Battery Storage Systems for Data Centers & UPS
Fortis redefines battery energy storage for data centers, delivering more power in less space with zero fire or gas risk. Built on EticaAG’s immersion-cooled NMC platform, the Fortis Series introduces two purpose-built configurations: the Fortis Sidecar for UPS systems and the Fortis 400 for ±400 VDC rack architectures.
Both use EticaAG’s proprietary LiquidShield™ immersion cooling and HazGuard™ gas-mitigation technologies to prevent ignition, eliminate toxic off-gassing, and maintain uniform thermal performance under peak load. A Smart BMS provides real-time monitoring, active cell balancing, and automatic fault isolation for maximum uptime and safety.
With fully ITC and FEOC-compliant options, Fortis gives data centers a scalable, U.S.-built energy platform that combines NMC-class performance with unmatched fire and gas safety.
Lithium-Ion Leads the Future of Data Center Power
High performance, compact design, and long life make lithium-ion the clear choice over VRLA
Longer Life, Lower Cost
Lithium-ion batteries last significantly longer than lead-acid systems, delivering more cycles and reducing total cost of ownership over time.
More Energy in Less Space
With superior energy and power density, lithium-ion systems store more energy in a smaller, lighter footprint, freeing valuable data center space.
Fast & Efficient Power
Lithium-ion batteries recharge quickly and operate with higher round-trip efficiency, ensuring more uptime and optimized energy performance.
Guaranteed Safety from Fire and Toxic Gases
Once excluded for fire and gas risk, NMC batteries are now safe indoors with EticaAG.
Shell Certified Fluid for Battery Storage Applications
Battery Immersion Cooling Technology
Just as many data centers submerge servers in non-conductive liquid, EticaAG’s immersion technology fully submerges every cell in a dielectric liquid, eliminating hot spots, lowering peak temperatures, and reducing thermal stress to slow aging and extend battery life.
Thermal Runaway Containment
LiquidShield isolates and contains thermal runaway events within the single cell, preventing fire propagation and catastrophic failure.
HazGuard Gas Management
Captures and contains off-gases at the module level, routing them to HazGuard where they're converted into inert gases for safe release.
Fortis Sidecar
Fire-Safe Battery Storage for Data Center UPS
- High-rate NMC cells deliver exceptional power density and rapid recovery for demanding UPS loads, providing peak continuity and short-duration ride-through with industry-leading watts per rack-unit.
- Up to 70% less space and 60–80% lower weight than VRLA systems, reducing structural load and installation cost.
- Charges up to 6× faster and operates with higher round-trip efficiency, minimizing oversizing for peak loads.
- Seamless UPS integration and scalable runtime expansion within existing rack architectures.
- Configurations available with Tier 1 FEOC-compliant cells or U.S.-made cells that qualify for both ITC and FEOC compliance
| Sidecar Technical Specs |
WITH TIER 1 BATTERY CELL FEOC Compliant |
WITH USA BATTERY CELL ITC & FEOC Compliant |
|---|---|---|
|
Rack Energy Capacity |
233.3 kWh |
285.1 kWh |
|
Rack Max Power |
1,814.4 kW |
567.9 kW |
|
Immersion Power (continuous) |
122.5 kW |
38.3 kW |
|
Runtime @ Immersion Power |
9.5 minutes |
37.2 minutes |
|
Nominal Voltage |
43.2 V |
41.88 V |
preliminary specifications
Fortis 400
Fire-Safe Battery Storage for ±400 VDC Data Center Racks
- Optimized for OCP Diablo 400 ±400 VDC sidecar integration
- 12 modules per rack for 224 kWh energy and 1.74 MW of continuous power
- Seamless transition path to 800 V Kyber-style rack architectures via DC/DC interface
- Scalable: 8-12 modules per rack configurable to load and runtime requirements
- LiquidShield immersion ensures uniform thermal performance under peak load
| Technical Specs |
FORTIS 400 Samsung 45T Cell |
|---|---|
|
Rack Energy Capacity |
223.9 kWh |
|
Rack Max Continuous Power |
1,742.4 kW |
|
Rack Max Peak Power |
2,239.2 kW |
|
Runtime @ Rack Real-World Continuous Power |
9.5 minutes |
|
Nominal Voltage |
518.4 V |
preliminary specifications
Applications
How Data Centers Deploy Fortis
Bridge Power
Delivers instant ride-through energy during grid or generator transfer, maintaining uninterrupted UPS output and protecting mission-critical IT loads from power loss or voltage dips.
Extended Backup
Provides longer runtime than traditional UPS batteries, enabling graceful shutdowns or extended generator start sequences while keeping high-density data halls fire-safe and fully operational.
Power Quality Conditioning
Stabilizes voltage and frequency, smoothing transient loads and harmonics for cleaner, more reliable power delivery to sensitive data center equipment.
Safe. Resilient. Reliable.
Keep Your Data Center Powered, Protected, and Profitable
Let’s design a fire-safe energy storage solution that delivers uptime, savings, and sustainability.