Charged Reviews · Quick reference
Fortress Power eFlex MAX 5.4
- Brand
- Fortress Power
- Model
- eFlex MAX 5.4
- SKU / part number
- ?
- Category
- Batteries
Energy and chemistry
| Nominal voltage | 51.2 V[1] |
|---|---|
| Rated capacity | 105 Ah[1] |
| Nominal energy | 5.37 kWh[1] |
| Usable energy | ? |
| Chemistry | LiFePO4[1] |
| Cell format | ? |
Charge and discharge
| Continuous charge current | 55 A[1, 5]Needs confirmation |
|---|---|
| Continuous discharge current | ? |
| Maximum charge current | 100 A[1] |
| Maximum discharge current | ? |
| Peak charge current | ? |
| Peak discharge current | ? |
| Continuous output power | ? |
| Peak output | 125 C × 5 D [5]Needs confirmation |
| Maximum charge voltage | 54.4 V[5] |
| Charge cutoff voltage | ? |
| Discharge cutoff voltage | ? |
BMS and communication
| BMS continuous current | ? |
|---|---|
| Communication protocols | ? |
| Wireless monitoring | ? |
| Inverter compatibility | ? |
Operating temperature
| Charging temperature | 0 to 45 °C[5]Needs confirmation |
|---|---|
| Discharging temperature | -20 to 55 °C[5]Needs confirmation |
| Storage temperature | 0 to 35 °C[5]Needs confirmation |
| Self-heating | ? |
Mechanical and mounting
| Dimensions | 184 W × 616 H × 446 L mm[1] |
|---|---|
| Weight | 49 kg / 108.03 lb[5]Needs confirmation |
| Terminals | ? |
| Mounting / format | Wall mount or floor mount, for indoor and outdoor use[5] |
| Enclosure rating (IP) | IP65[5] |
Installation (from the manual)
Torque
| Main terminal torque | 7 to 7.7 N·m(61.96 to 68.15 in-lb*)[5] |
|---|---|
| Communication terminal torque | ? |
| Ground terminal torque | ? |
Conductors
| Cable size | we recommend copper cable starting at 1/0 AWG for runs of less than 10ft[5] |
|---|
Not in the manual: Protection, Clearances and orientation, Grounding, Communication
System limits
| Maximum parallel units | 16[5] |
|---|---|
| Series connection | ? |
| Maximum system energy | ? |
Page 1 of 2 · Installation values · ? means nothing is recordedAggregated, often community-reported information, not official documentation. Do not rely on it for installation, purchase or compliance decisions; always confirm values with the manufacturer’s official documentation. Charged Reviews accepts no responsibility for errors.