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Fortress Power LLC FP-Nano
The Fortress Power LLC FP-Nano is a home battery range from Fortress Power LLC with 18 models. Models store 20.48 kWh – 61.44 kWh in Lithium Iron Phosphate cells. Rated AC power 20.48 kW – 61.44 kW. Listed and verified: UL 1973 and UL 9540. Sold in United States.
Specifications
- Capacity
- 20.48 kWh – 61.44 kWh
- Battery chemistry
- Lithium Iron Phosphate
- Rated AC power
- 20.48 kW – 61.44 kW
- Models in this range
- 18
Product details
- Product type
- Home battery
- Brand
- Fortress Power LLC
- Category
- Home Battery Storage
- Sold in
- United States
- Listed in
- California Energy Commission
Models (18)
| Model | Nominal capacity | Usable capacity | AC power | Certificate |
|---|---|---|---|---|
| FP-Nano-S4-I | 20.48 kWh | 20.48 kVA | ||
| FP-Nano-S4-O | 20.48 kWh | 20.48 kVA | ||
| FP-Nano-S5-I | 25.6 kWh | 25.6 kVA | ||
| FP-Nano-S5-O | 25.6 kWh | 25.6 kVA | ||
| FP-Nano-S6-I | 30.72 kWh | 30.72 kVA | ||
| FP-Nano-S6-O | 30.72 kWh | 30.72 kVA | ||
| FP-Nano-S7-I | 35.84 kWh | 35.84 kVA | ||
| FP-Nano-S7-O | 35.84 kWh | 35.84 kVA | ||
| FP-Nano-S8-I | 40.96 kWh | 40.96 kVA | ||
| FP-Nano-S8-O | 40.96 kWh | 40.96 kVA | ||
| FP-Nano-S9-I | 46.08 kWh | 46.08 kVA | ||
| FP-Nano-S9-O | 46.08 kWh | 46.08 kVA | ||
| FP-Nano-S10-I | 51.2 kWh | 51.2 kVA | ||
| FP-Nano-S10-O | 51.2 kWh | 51.2 kVA | ||
| FP-Nano-S11-I | 56.32 kWh | 56.32 kVA | ||
| FP-Nano-S11-O | 56.32 kWh | 56.32 kVA | ||
| FP-Nano-S12-I | 61.44 kWh | 61.44 kVA | ||
| FP-Nano-S12-O | 61.44 kWh | 61.44 kVA |
Certifications
| Certification | Market | Status | Reference | Valid until |
|---|---|---|---|---|
| UL 1973 | United States and Canada | ✓ Verified 19 October 2026 | SGS | |
| UL 9540 | United States and Canada | ✓ Verified 19 October 2026 | SGS |
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