Stackable eForce Battery Kit With Everything to Install
The Fortress eForce Battery Kit pairs a stackable 48V lithium iron phosphate eForce battery with the parts you need to install it. Each kit includes the battery, a battery combiner, battery cables, wire management, the eWay conduit box and a floor mount.
Choose 9.6 kWh (200Ah), 19.2 kWh (400Ah) or 28.8 kWh (600Ah). The Fortress eForce Battery Kit is IP65 rated with integrated heaters and pairs with the Fortress Power Envy inverter for a whole-home backup system.
Why You'll Love The Fortress eForce Battery Kit
One order, ready to install. Battery, combiner, cables, wire management, conduit box and floor mount all come together, so your installer is not chasing parts.
Built for any weather. IP65 rated with integrated heaters and a -4°F to 140°F operating range, so it can live in a garage or outside.
Long service life. Tier-1 automotive cells rated for up to 8000 cycles, backed by a 10-year warranty.
Grows with you. Stack up to 28.8 kWh in one tower and expand to 153 kWh in total as your needs grow.
Your life, with the Fortress eForce Battery Kit
The power goes out and your lights, fridge and well pump keep running. On sunny days your panels fill the battery and you lean less on the grid. The front light shows you the charge level at a glance, so you always know where you stand.
The Fortress eForce Battery Kit in a nutshell
Capacity options
9.6 kWh, 19.2 kWh or 28.8 kWh at 48V nominal.
What's included
eForce battery, battery combiner, battery cables, wire management, eWay conduit box and floor mount.
Inverter pairing
Made to work with the Fortress Power Envy inverter (8, 10 and 12kW). The eWay routes AC and DC wiring through a built-in 750A busbar.
Installation
Stackable design with quick plug connections to cut install time. A front LED shows battery percentage, alarms and status.
Fortress eForce Battery Kit specifications
Battery (per Fortress eForce datasheet)
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Nominal energy: 9.6 kWh / 19.2 kWh / 28.8 kWh
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Nominal capacity: 200Ah / 2 x 200Ah / 3 x 200Ah
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Nominal voltage: 48V
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Operating voltage range: 39 to 54V
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Bulk/absorption charge: 51.5V
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Re-charge / cut-off voltage: 46V / 42V
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Max charge/discharge: 195/195A (9.6), 250/250A (19.2 and 28.8)
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Closed-loop charge/discharge: 120/160A (9.6), 240/250A (19.2), 250/250A (28.8)
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Open-loop charge/discharge: 100/100A (9.6), 200/200A (19.2), 250/250A (28.8)
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Surge discharge power: 14,400W (10 s)
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Max short circuit: 3000A, 5 ms
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Max units in parallel: 16 (9.6), 8 (19.2), 5 (28.8)
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Cell type: Tier-1 prismatic 15-cell LFP
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Cycle life: 8000 cycles at 70% end of life
General
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Dimensions (W x D x H): 24.4 x 9.4 x 33.5 in (9.6), 24.4 x 9.4 x 53.1 in (19.2), 24.4 x 9.4 x 72.9 in (28.8)
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Battery weight: 269 lb (9.6), 487 lb (19.2), 705 lb (28.8)
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Operating temperature: -4°F to 140°F (-20°C to 60°C)
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Ingress protection: IP65
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Communication: RS485 / Wi-Fi / CAN
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Warranty: 10 years
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Certifications: UL1973, ANSI/CAN/UL9540:2023, UL9540A, UN38.3
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Listings: CEC, LUMA, OGPe
Part numbers
- EFORCE9.6KIT: 9.6 kWh kit
- EFORCE19.2KIT: 19.2 kWh kit
- EFORCE28.8KIT: 28.8 kWh kit
Let the experts help you find your perfect Fortress eForce Battery Kit setup
Not sure which size covers your home, or how many kits to pair with your Envy? Send us your daily usage and backup goals and we will size the system with you. Kits ship by freight.
Email support@kratopower.com or call +1 888-855-7286.
Fortress eForce Battery Kit documents and materials
Safety disclaimer: Lithium battery systems store a large amount of energy. Installation should be carried out by a licensed electrician in line with the NEC, local codes and the manufacturer's instructions. You use this product at your own risk. The content on this page is general product information, not professional or medical advice. Every installation is different, so if you have any doubt, consult a qualified professional.
