Catalog / Battery
Fortress Power · FP-eFlex-MAX
Fortress Power eFlex MAX 5.4kWh LFP Battery
from $1,446.40
Compatibility data on this battery is extracted from published specs and cross-checked (partial cross-check). Always verify against the manufacturer datasheet before you buy or wire anything.
Where to buy
| Merchant | Price | Checked | |
|---|---|---|---|
| Renvu best | $1,446.40 | 2026-08-03 | View listing → |
| Inverters R Us | $1,809.00 | 2026-08-03 | View listing → |
Published specs
| Capacity | 5,400 Wh |
| Capacity | 105 Ah |
| Nominal voltage | 48 V |
| Chemistry | LiFePO4 |
| Cycle life | 8,000 cycles |
Some links are affiliate links — buying through them supports AmpHour at no cost to you. Prices refresh twice daily; always confirm on the merchant's page.