Fortress Power eVault Classic 18.5kWh
Official manufacturer NA verified Sept. 25, 2026
Identity
| brand | Fortress Power |
| category | batteries |
| manufacturer | Fortress Power |
| manufacturer_key | fortresspower |
| model | eVault Classic 18.5kWh |
| model_key | evaultclassic185kwh |
| product_family | eVault Classic |
| product_status | discontinued |
| region | NA |
| series | eVault |
Electrical
| capacity_ah |
360
eVault Classic 18.5kWh LFP Battery
|
| chemistry | LiFePO4 (LFP) |
| cycle_life | 6000 |
| dc_voltage_max_v |
55
eVault Classic 18.5kWh LFP Battery
|
| dc_voltage_min_v |
48
eVault Classic 18.5kWh LFP Battery
|
| depth_in |
21.3
eVault Classic 18.5kWh LFP Battery
|
| depth_of_discharge_pct | 90.0 |
| height_in |
38.8
eVault Classic 18.5kWh LFP Battery
|
| internal_breaker_a |
250
eVault Classic 18.5kWh LFP Battery
|
| max_charge_current_a |
170
eVault Classic 18.5kWh LFP Battery
|
| max_discharge_current_a |
180
eVault Classic 18.5kWh LFP Battery
|
| max_parallel_units |
12
eVault Classic 18.5kWh LFP Battery
|
| max_pulse_current_a |
200 (10 s)
eVault Classic 18.5kWh LFP Battery
|
| nominal_energy_kwh |
18.5
eVault Classic 18.5kWh LFP Battery
|
| nominal_voltage_v |
51.2
eVault Classic 18.5kWh LFP Battery
|
| official_product_url |
https://www.fortresspower.com/products/evault-18-5kwh-lifepo-battery/
eVault Classic 18.5kWh LFP Battery — inventory record source_url
|
| recommended_charge_current_a |
100
eVault Classic 18.5kWh LFP Battery
|
| round_trip_efficiency_percent |
>98
eVault Classic 18.5kWh LFP Battery
|
| scalability |
Maximum 12 in Parallel (222 kWh)
eVault Classic 18.5kWh LFP Battery
|
| usable_energy_kwh | 16.59 |
| warranty |
5/10 Years
eVault Classic 18.5kWh LFP Battery
|
| weight_lbs |
476
eVault Classic 18.5kWh LFP Battery
|
| width_in |
19.2
eVault Classic 18.5kWh LFP Battery
|
Installation
| mounting |
Floor standing
eVault Classic 18.5kWh LFP Battery
|
Environment
| charging_temperature_f |
32 to 113
eVault Classic 18.5kWh LFP Battery
|
| discharging_temperature_f |
32 to 113
eVault Classic 18.5kWh LFP Battery
|
| ip_rating |
IP21
eVault Classic 18.5kWh LFP Battery
|
| recommended_storage_temperature_f |
50 to 95
eVault Classic 18.5kWh LFP Battery
|
Interfaces & connectors
| communications |
['CAN', 'RS485']
eVault Classic 18.5kWh LFP Battery
|
Documents
application_note
eVault disassembly and charging V1.3
installation_manual
eVault 18.5 Installation Manual Rev. 9.6
product_page
eVault Classic 18.5kWh LFP Battery
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| builder_completeness | partial |
| region_notes | US manufacturer; all published certification is North American (UL 1973 / UL 9540 / UL 9540A / CEC / SGIP / OGPe) and ANMA already stores Fortress Power under region NA. |