Fortress Power Solar Products
3 products across Batteries.
Fortress Power Battery Overview
Capacity Range
5.4–18.5 kWh
3 models
Power Output
2.56–8 kW
continuous
Chemistry
LFP
3 stackable
Warranty
10 yr
max coverage
All Fortress Power Batteries (3)
| Model | Capacity | Power | Chemistry | Scalable | Warranty |
|---|---|---|---|---|---|
| eVault Max 18.5 | 18.5 kWh | 8 kW | LFP | Up to 10 | 10 yrs |
| LFP-10 | 10.24 kWh | 5.12 kW | LFP | Up to 8 | 10 yrs |
| eFlex 5.4 | 5.4 kWh | 2.56 kW | LFP | Up to 8 | 10 yrs |
About Fortress Power
Fortress Power manufactures batteries with 3 models in their 2026 product lineup. Battery offerings range from 5.4 to 18.5 kWh using LFP chemistry.
Quick Facts
- Total Products: 3 models
- Categories: Batteries
Related Guides
Frequently Asked Questions
How many solar products does Fortress Power offer in 2026?
Fortress Power offers 3 products in their 2026 lineup: 3 batteries.
What battery storage options does Fortress Power offer?
Fortress Power offers 3 battery models with 5.4–18.5 kWh usable capacity and 2.56–8 kW power output. Chemistry: LFP. 3 models support stacking for increased capacity.