FORTRESS Power eFlex 5.4 Power Lithium Batteries Using Outback Inverters Instructions
- June 6, 2024
- FORTRESS Power
Table of Contents
Rev1.4_5-13-21
How To Set Up Fortress Power Lithium Batteries Using Outback Inverters
Introduction
This integration guide will help set up the charge/discharge parameters of Fortress Power batteries as they relate to Sol-ark inverters, as well as closed-loop communication
Datasheets / Manuals: https://www.fortresspower.com/resources/
Email: techsupport@fortresspower.com
Discord Support: https://discord.gg/kxX6QMjKFw
Phone: 877-497-6937 x 2
Hours: 8:30 AM – 6:30 PM EST
Warranty Submittal: https://www.fortresspower.com/product-warranty/
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IMPORTANT! Fortress batteries may require disassembly if the voltage drops below 40V-44V. optics, OutBack’s free remote monitoring system, can be configured to send email notifications on a low battery to help warn and avoid a complete discharge of the battery.
Radian / FXR Inverter Settings (divide voltage by 2 for 24V FXR settings)
| Inverter | 80% DoD, 6000 cycles |
|---|---|
| Absorb Voltage and Time | 54.4 Vdc / 2.0 hr |
| Float Voltage and Time | 54.4 Vdc /0.0 hr |
| Re-float Voltage | 52.4 Vdc |
| Re-Bulk Voltage | 51.2 Vdc |
| AC Input Mode | Grid-Tied (default, adjust as needed) |
| AC Charger Limit in AC | LFP10: 15 Aac per battery |
eFlex: 15 Aac per battery
eVault: 30 Aac per battery
Low Battery Cut-Out Voltage| 49.6V
LBCO Delay| 130 seconds
Low Battery Cut-in Voltage| 51.
High Battery Cut-Out Voltage| 56.4V
HBCO Delay| 10 seconds
High Battery Cut-in Voltage| 55.2V
SeIIRE (Offset) Voltage Max| 51.6V for “zero-outflow”, 53.6V for selling at
“100% full”
Temp Sensors| Do not use temperature sensors / reduce any temperature
coefficients to as close to zero as allowed
SkyBox Inverter Settings
The settings below should be programmed into the unit under the Custom choice.
Inverter|
---|---
Maximum SOC| 100%
Minimum SOC| 20%
Absorb Charge| Timed
Absorb Voltage| 54.4 Vdc
Absorb Time| 02:00 hr
Float Charge| Disabled
Float Voltage| Can be left at default
Float Time| Can be left at default
Re-float Voltage| 54.4 Vdc
Re-bulk Voltage| 52.5 Vdc
Equalize Voltage| 54.4 Vdc
Minimum Equalize Time| 0:00
Max Charge Current (Adc)| LFP-5 & LFP-10: 50Adc
eVault: 100Adc
eFlex: 55Adc
Max Discharge Current (Adc)| LFP-5 & LFP-10: 90Adc
eVault: 125Adc
eFlex: 60Adc
Grid Charge Limit (kW)| Site specific
Low Battery Cutout| 50 Vdc
LBCO Delay| 15 seconds
Low Battery Cut-in| 51.0 Vdc
High Battery Cutout| 56.0 Vdc
HBCO Delay| 10 seconds
High Battery Cut-in| 55.5 Vdc
Battery Series| Custom
Battery Model Number| Custom
Battery Description| Fortress Power
Battery Total Amp-Hours| eFlex: 105Ah
LFPP-10: 200Ah
eVault: 360 Ah
Charge Efficiency Factor| 96%
Absorb End Amps| 1Adc
Charge Controller Settings
Charge Controller|
---|---
Absorb Voltage and Time| 54.4, 2 hours
Float Voltage| 54.
Rebuck Voltage| 52.5 note: higher than inverter
DC Current Limit| LFP-10: 80A per battery ÷ # of controllers
eVault: 170A per battery ± # of controllers
eFlex: 55A per battery ± # of controllers
Absorb End Amps| 1A
Communication Settings
FLEXnet DC (FN-DC)| If FlexNet DC display voltage is not within 0.1V of
inverter terminal voltage, calibrate Outback equipment
---|---
Battery Amp-hour| eFlex :105Ah per battery
LFP-10: 200Ah per battery
eVault: 360Ah per battery
Charged Voltage| 54.0V
Charged Time| 15 minutes
Charged Return Amps| 1A
Battery Charge| 96%
Relay Invert Logic| No
Relay Voltage| High = 53.8 ； Low = 51.2
Relay Delay| High = 1, Low = 0
MATE3/MATE3s
FLEXnet DC Advanced| Low SOC Warning = 15%
FLEXnet DC Advanced| Critical SOC Warning = 10%
Calibrate FlexNet DC Instructions:
https://www.outbackpower.com/downloads/documents/appnotes/fndc_field_cal_app_note.pdf
05 Keystone Rd, Southampton, PA 18966. (877) 497 6937. sales@fortresspower.com. Fortresspower.com
References
- Leading Clean Energy Storage Provider | Lithium Battery Storage
- 📧sales@fortresspower.com
- 📧techsupport@fortresspower.com
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