Fortress Power MINI
The Fortress Power MINI is a home battery range from Fortress Power with 31 models. Models store 81 kWh – 92 kWh in Lithium Ion, Lithium Iron Phosphate cells. Rated AC power 30 kW – 50 kW. Listed and verified: UL 9540. Sold in United States.
Specifications
- Capacity
- 81 kWh – 92 kWh
- Battery chemistry
- Lithium Ion, Lithium Iron Phosphate
- Rated AC power
- 30 kW – 50 kW
- Models in this range
- 31
Backup and savings with the Fortress Power MINI
From 81 kWh to 92 kWh of storage, the Fortress Power MINI stores daytime solar for the evening and night, and with a backup-capable installation keeps a home running through a power cut. It delivers 30 kW of AC power (up to 50 kW in larger configurations), enough to run heat pumps, ovens and air conditioning alongside the rest of the house.
One full charge covers about 274% of an average US home's daily electricity use of 29.6 kWh.
Its LiFePO4 (lithium iron phosphate) cells are the long-life chemistry of home energy storage: rated for thousands of cycles and more thermally stable than other lithium-ion types.
| Load | Runs for about |
|---|---|
| Essential circuits: fridge, lights, internet, phone charging (about 500 W) | 6.1 days |
| An average US home (about 1.23 kW around the clock) | 2.5 days |
Estimates. Electricity prices: U.S. Energy Information Administration, average household electricity use.
Product details
- Product type
- Home battery
- Brand
- Fortress Power
- Category
- Home Battery Storage
- Sold in
- United States
- Listed in
- California Energy Commission
Models (31)
| Model | Nominal capacity | Usable capacity | AC power | Certificate |
|---|---|---|---|---|
| MINI-30-0-81-208 | 81 kWh | 30 kVA | ||
| MINI-30-0-81-480 | 81 kWh | 30 kVA | ||
| MINI-30-45-81-208 | 81 kWh | 30 kVA | ||
| MINI-30-45-81-480 | 81 kWh | 30 kVA | ||
| MINI-30-90-81-208 | 81 kWh | 30 kVA | ||
| MINI-30-90-81-480 | 81 kWh | 30 kVA | ||
| MINI-40-0-81-208 | 81 kWh | 40 kVA | ||
| MINI-40-0-81-480 | 81 kWh | 40 kVA | ||
| MINI-40-135-81-208 | 81 kWh | 40 kVA | ||
| MINI-40-45-81-208 | 81 kWh | 40 kVA | ||
| MINI-40-45-81-480 | 81 kWh | 40 kVA | ||
| MINI-40-90-81-208 | 81 kWh | 40 kVA | ||
| MINI-40-90-81-480 | 81 kWh | 40 kVA | ||
| MINI-50-0-81-208 | 81 kWh | 50 kVA | ||
| MINI-50-135-81-208 | 81 kWh | 50 kVA | ||
| MINI-50-45-81-208 | 81 kWh | 50 kVA | ||
| MINI-50-90-81-208 | 81 kWh | 50 kVA | ||
| MINI-30-0-92-208 | 92 kWh | 30 kVA | ||
| MINI-30-0-92-480 | 92 kWh | 30 kVA | ||
| MINI-30-45-92-208 | 92 kWh | 30 kVA | ||
| MINI-30-45-92-480 | 92 kWh | 30 kVA | ||
| MINI-30-90-92-208 | 92 kWh | 30 kVA | ||
| MINI-30-90-92-480 | 92 kWh | 30 kVA | ||
| MINI-40-0-92-208 | 92 kWh | 40 kVA | ||
| MINI-40-135-92-208 | 92 kWh | 40 kVA | ||
| MINI-40-45-92-208 | 92 kWh | 40 kVA | ||
| MINI-40-90-92-208 | 92 kWh | 40 kVA | ||
| MINI-50-0-92-208 | 92 kWh | 50 kVA | ||
| MINI-50-135-92-208 | 92 kWh | 50 kVA | ||
| MINI-50-45-92-208 | 92 kWh | 50 kVA | ||
| MINI-50-90-92-208 | 92 kWh | 50 kVA |
Certifications
| Certification | Market | Status | Reference | Valid until |
|---|---|---|---|---|
| UL 9540 | United States and Canada | ✓ Verified 19 October 2026 | Intertek |