Fortress Power eForce 19.2kWh LFP Battery
The Fortress Power eForce 19.2 kWh is a modular, stackable Lithium Iron Phosphate (LFP) battery system designed for flexible home energy storage. Comprising two 9.6 kWh modules stacked vertically, this IP65-rated system offers a balance of high capacity and space-saving design. It features a cable-free architecture for quick installation and built-in heating to ensure reliable performance in extreme climates.
Product Specifications
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Voltage Range: 39V – 54V
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Max Continuous Current: 240 A (Closed-Loop)
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Surge Power: 14.4 kW (10 seconds)
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Round Trip Efficiency: > 98%
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Communication: CAN / RS485 / Wi-Fi
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Cycle Life: 8,000 Cycles (@ 80% DoD)
Why Choose eForce 19.2kWh
The eForce 19.2 is the “Goldilocks” solution for most standard homes—offering double the capacity of the entry-level module without the height of the maxed-out stack. It provides ample power for overnight loads and larger appliances while remaining compact. Its wireless stacking technology simplifies installation, and its rugged weatherproof design allows it to be placed outdoors, freeing up valuable indoor space.
Benefits of eForce 19.2kWh
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Wireless “Click-to-Connect”: The two battery modules stack seamlessly using internal plugs, eliminating the need for external jumper cables and reducing installation time and clutter.
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All-Climate Resilience: With an IP65 weatherproof rating and integrated heating, it operates reliably in rain, snow, and freezing temperatures (down to -4°F), making it perfect for outdoor installs.
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Mid-Sized Powerhouse: Offers a substantial 400Ah capacity, capable of powering essential home loads for extended periods during outages.
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Smart Control Center: The included “eWay” top unit acts as the brain, providing closed-loop communication with Sol-Ark and Fortress inverters for optimized charging and state-of-charge tracking.
General Data
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Dimensions (W x D x H): 30.89 x 9.08 x 53.46 in (784 x 231 x 1358 mm
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Weight: 487 lbs (221 kg)
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Mounting: Floor Standing (includes base)
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Operating Temperature: -4°F to 140°F (-20°C to 60°C)
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Certifications: UL 1973, UL 9540, UL 9540A, UN 38.3
Frequently Asked Questions
Q1: How is this different from the 9.6 kWh model?
The 19.2 kWh system is simply two 9.6 kWh modules stacked together. It offers double the energy capacity (400Ah vs 200Ah) while using the same floor footprint, just standing taller.
Q2: Can I install this battery outside?
Yes. The eForce 19.2 is IP65 rated for water and dust resistance and includes internal heaters, making it fully capable of surviving outdoor installations in harsh environments.
Q3: Can I add a third module later?
Yes. You can easily expand this system to 28.8 kWh by removing the eWay top, adding a third 9.6 kWh module, and replacing the top. No rewiring is required due to the wireless stacking design.
Q4: Does it communicate with my inverter?
Yes. It features closed-loop communication ports that integrate seamlessly with Sol-Ark, Fortress Envy, Schneider, and Victron inverters for precise control.
Q5: How heavy is the total unit?
The complete stack weighs 465 lbs. However, it is assembled piece-by-piece (base, module 1, module 2, eWay top), so you never have to lift the full weight at once.



