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Stackable Home Energy Storage
The eForce is a modular lithium battery system designed for residential energy storage applications. Built on Fortress Power's 48V lithium platform, each eForce unit provides 9.6kWh of energy storage capacity. The system uses automotive-grade lithium iron phosphate (LFP) cells rated for 8,000 charge cycles with a 20-year design life. The modular architecture allows users to scale their energy storage based on specific power requirements and available space.
The eForce features a stackable design that supports vertical configurations of up to three batteries (28.8kWh) using quick-plug connectors, reducing installation time and cable management complexity. For applications requiring more capacity, the system supports up to 16 batteries in parallel configurations, providing a maximum capacity of 268.8kWh. The eForce integrates with the Fortress Power Envy Inverter through the eWay wireway system, which includes built-in busbars, conduit ports, and status indicators. This integrated approach creates a complete energy storage solution suitable for backup power, time-of-use optimization, and off-grid applications in various weather conditions with its IP65 rating.
Fortress Power eForce Battery Storage Specifications
9.6 kWh
Single ModuleGeneral Specifications
- Price
- $5,589.00
- Weight
- 269 lbs (122 kg)
- Dimensions (W×D×H)
- 24.4×9.4×33.5 in
- Maximum Units in Parallel
- 16 units
Battery Specifications
- Nominal Capacity
- 200Ah
- Nominal Voltage
- 48V
- Max Charge/Discharge
- 195A / 195A
- Closed-Loop Operation
- 120A / 160A
19.2 kWh
Two Module StackGeneral Specifications
- Price
- $10,019.00
- Weight
- 487 lbs (221 kg)
- Dimensions (W×D×H)
- 24.4×9.4×53.1 in
- Maximum Units in Parallel
- 8 units
Battery Specifications
- Nominal Capacity
- 2×200Ah
- Nominal Voltage
- 48V
- Max Charge/Discharge
- 250A / 250A
- Closed-Loop Operation
- 240A / 250A
28.8 kWh
Three Module StackGeneral Specifications
- Price
- $14,449.00
- Weight
- 705 lbs (320 kg)
- Dimensions (W×D×H)
- 24.4×9.4×72.9 in
- Maximum Units in Parallel
- 5 units
Battery Specifications
- Nominal Capacity
- 3×200Ah
- Nominal Voltage
- 48V
- Max Charge/Discharge
- 250A / 250A
- Closed-Loop Operation
- 250A / 250A
All Configurations Include
Streamlined Setup and Seamless Integration
eWay Wireway System
Integrated wireway featuring built-in 750A busbars, conduit ports, and an emergency disconnect switch. Real-time status LEDs provide system monitoring at a glance.
Quick-Plug Connections
Cable-free battery stacking with secure quick-plug connectors reduces installation time and eliminates cable management complexity between modules.
Flexible Mounting
Multiple installation options including ground-mount, floor standing, and wall-mounted configurations (wall bracket sold separately) to fit any space.
Complete System Visibility and Control
Monitor and Control Anywhere, Anytime
Individual Battery Monitoring
Track performance metrics for each battery module including charge level, temperature, and health status.
Over-the-Air Updates
Receive automatic firmware updates to ensure optimal performance and access to new features.
VPP Program Integration
Participate in Virtual Power Plant programs directly through the app to earn incentives while supporting grid stability.
Mobile & Web Access
Full system control from any device with real-time notifications and customizable alerts.
The Fortress eForce Series is Design for:
Whole-Home Backup Power
Protect your home from outages with automatic switchover. A 19.2kWh system can power essential loads for 24-48 hours, while larger configurations support whole-home backup.
Solar Energy Storage
Store excess solar energy during the day for use at night. Maximize self-consumption and reduce grid dependence while maintaining backup capability.
Essential Load Management
Keep critical systems running during outages including refrigeration, medical equipment, home office, and HVAC. Smart load management maximizes runtime.
Time-of-Use Optimization
Charge batteries during off-peak hours and discharge during peak rates. Reduce electricity costs by 30-50% while maintaining backup protection.
Off-Grid Living
Complete energy independence for remote homes and cabins. The IP65 rating and integrated heating ensure reliable operation in extreme weather conditions.
Virtual Power Plant
Earn revenue by participating in grid support programs. The eForce system is pre-approved for select VPP programs nationwide.
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