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Fortress Power eForce 9.6kWh Battery | Stackable to 153.6kWh | Outdoor-Rated | Whole-Home & Commercial Backup
Reliable Power. Built to Scale.
The Fortress Power eForce 9.6kWh is a rugged, high-performance 48V lithium iron phosphate (LFP) battery designed for scalable energy storage in both residential and commercial environments. With 9.6kWh of nominal capacity per unit and support for up to 16 batteries in parallel (153.6kWh total), the eForce is built to power everything from whole-home backup systems to modular commercial energy projects.
Featuring a stackable design, integrated safety and status monitoring, and advanced closed-loop communication, the eForce ensures optimal performance, simplified installation, and long-term durability—even in harsh outdoor conditions.
Key Features:
Modular Energy Storage: Each eForce unit delivers 9.6kWh of nominal energy and can scale up to 153.6kWh with 16 units. Perfect for everything from residential backup to commercial-scale storage.
Premium LFP Cell Chemistry:Utilizes Tier-1 prismatic lithium iron phosphate cells known for thermal stability, long cycle life, and high safety standards—ideal for demanding backup and off-grid use.
Outdoor-Ready Design (IP65 Rated): Weatherproof and temperature-tolerant (-4°F to 140°F), the eForce is built for reliable operation in a wide range of environments—indoors or out.
Advanced System Communication: Supports RS485, CAN, and Wi-Fi protocols for closed-loop communication with Fortress Envy inverters and other 48V systems—maximizing efficiency and battery health.
Stackable, Service-Friendly Build:Designed for easy vertical stacking with an integrated power disconnect switch, backlit status indicator, and eWay-ready antenna port for simplified system management.
Safety Comes Standard: Equipped with a lockable, taggable disconnect switch, built-in safety valve, and multiple layers of internal protection for safe operation in any setting.
10-Year Warranty:Backed by Fortress Power’s comprehensive 10-year warranty for long-term peace of mind.
Applications:
Whole-Home Backup Power Systems
Off-Grid & Hybrid Solar Installations
Commercial & Light Industrial Energy Storage
Modular, Expandable Energy Projects
Clean Integration with Envy-Series Inverters
What’s Included:
1 × Fortress Power eForce 9.6kWh Outdoor LFP Battery
Integrated Power Disconnect (Lockable & Taggable)
Backlit System Status Indicator
Built-in Antenna Port for Guardian Remote Monitoring
Stackable Hardware for Multi-Unit Installs
Installation Manual & Warranty Information
Specifications
Specification
eForce 9.6
Nominal Energy
9.6 kWh
Nominal Voltage
48V
Nominal Capacity
200Ah
Cell Chemistry
Tier-1 Prismatic LFP
Max Charge/Discharge Current
195A
Surge Discharge Power (10s)
14,400W
Cycle Life @ 70% EOL
8000 Cycles
Operating Voltage Range
39–54V
Recharge / Cut-off Voltage
46V / 42V
Communication Interfaces
RS485, CAN, Wi-Fi
Dimensions (W × D × H)
24.4 × 9.4 × 33.5 in
Weight
269 lbs
Operating Temperature
-4°F to 140°F (-20°C to 60°C)
Ingress Protection Rating
IP65
Mounting Options
Ground, Floor, or Wall (accessory)
Certifications
UL1973, UL9540, UL9540A, UN38.3
Warranty
10 Years
Shopping Guide
Power Storage & Inverter
Item / Appliance
Typical Power (W)
Usage Time (hrs)
Total Energy Needed (Wh)
Battery Size Needed (Ah) (12V System)
Inverter Size Needed (W)
LED Light Bulb (10W)
10W
5 hrs
50 Wh
4.2 Ah
100W
Phone Charging
5–10W
2 hrs
10–20 Wh
0.8–1.7 Ah
100W
Laptop Charging
50–100W
3 hrs
150–300 Wh
12.5–25 Ah
200W
Ceiling Fan
75W
6 hrs
450 Wh
37.5 Ah
150W
LED TV (32")
60W
4 hrs
240 Wh
20 Ah
150–200W
Refrigerator (Mini)
100W (avg)
8 hrs
800 Wh
66.6 Ah
300–500W
Water Pump (1HP)
750W
1 hr
750 Wh
62.5 Ah
1000W
Microwave Oven
1000W
0.5 hr
500 Wh
41.6 Ah
1200–1500W
Electric Kettle
1500W
0.3 hr
450 Wh
37.5 Ah
2000W
Key Formulas
Purpose
Formula
Example
Energy Consumption (Wh)
Watts × Hours
60W × 4 hrs = 240 Wh
Battery Capacity (Ah)
Watt-hours ÷ System Voltage (V)
240 Wh ÷ 12V = 20 Ah
Inverter Size (W)
Total Watts × 1.25 (for safety margin)
300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W)
Sum of all appliance watts to be used at once
Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery
(Battery Ah × Voltage) ÷ Total Load (W)
(100Ah × 12V) ÷ 240W = 5 hrs
How To Choose The Right Products
Need / Application
Recommended Battery
Inverter Size
Notes
Basic lighting + phone charging
50Ah – 100Ah (12V)
100W–200W
For small backup setups
Home office (laptop, fan, TV)
150Ah – 200Ah (12V or 24V)
500W – 1000W
For moderate usage with 4–6 hours of backup
Home backup (fridge, lights)
200Ah+ (24V or 48V recommended)
1000W – 1500W
Ideal for longer backups or heavier loads
Business / shop power backup
300Ah+ (48V system)
2000W – 3000W
Suitable for commercial setups or extended power outages
Why Shop With Us
Why Shop With Ecogrid Supply?
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Built for Energy Independence: Whether you’re powering a cabin, prepping for emergencies, or going off-grid, our products are selected for performance, reliability, and sustainable operation.