Catalog / Battery
Fortress Power · eFlex Max 5.4
Fortress Power eFlex MAX 5.4kWh 48V Lithium Iron Phosphate (LFP) Battery
from $1,670.00
Compatibility data on this battery is extracted from published specs and cross-checked. Always verify against the manufacturer datasheet before you buy or wire anything.
Where to buy
| Merchant | Price | Checked | |
|---|---|---|---|
| Solar Panel Store best | $1,670.00 | 2026-08-03 | View listing → |
Published specs
| Capacity | 5,374 Wh |
| Capacity | 105 Ah |
| Nominal voltage | 48 V |
| Chemistry | LiFePO4 |
| Cycle life | 8,000 cycles |
| Weight | 112 lb unchecked |
Rows marked unchecked come from the merchant's listing and have not been confirmed against the manufacturer's published specification. Everything else on this table was read from a manufacturer source by hand.
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.