Instructions for FORTRESS Power models including: eFlex 5.4, Power Lithium Batteries Using Outback Inverters, eFlex 5.4 Power Lithium Batteries Using Outback Inverters, Using Outback Inverters, Outback Inverters, Inverters

Jing Yu

How To Set Up Fortress Power Lithium Batteries Using ...

Rev1.4 5-13-21 How To Set Up Fortress Power Lithium Batteries Using Outback Inverters 505 Keystone Rd, Southampton, PA 18966 . (877) 497 6937

SkyBox Inverter Settings

Radian / FXR Inverter Settings (divide voltage by 2 for 24V FXR settings). Inverter. 80% DoD, 6000 cycles. Absorb Voltage and Time Float Voltage and Time Re-float Voltage.. View

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Fortress-Battery-Integration-Guide-Outback
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: 8:30AM - 6:30PM EST Warranty Submittal: https://www.fortresspower.com/product-warranty/

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IMPORTANT! Fortress batteries may require disassembly if voltage drops below 40V-44V. OpticsRE,
OutBack's free remote monitoring system, can be configured to send an email notification on 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 Float Voltage and Time Re-float Voltage Re-Bulk Voltage AC Input Mode AC Charger Limit in AC
Low Battery Cut-Out Voltage LBCO Delay Low Battery Cut-in Voltage High Battery Cut-Out Voltage HBCO Delay High Battery Cut-in Voltage SellRE (Offset) Voltage Max Temp Sensors

54.4 Vdc / 2.0 hr 54.4 Vdc / 0.0 hr
52.4 Vdc 51.2 Vdc Grid Tied (default, adjust as needed) LFP10: 15 Aac per battery eFlex: 15 Aac per battery eVault: 30 Aac per battery
49.6V 130 seconds
51.2 56.4V 10 seconds 55.2V 51.6V for "zero-outflow", 53.6V for selling at "100% full" Do not use temperature sensors / reduce any temperature coefficients to as close to zero as allowed

. . . 505 Keystone Rd, Southampton, PA 18966 (877) 497 6937 sales@fortresspower.com Fortresspower.com

Rev1.4_5-13-21

How To Set Up Fortress Power Lithium Batteries Using Outback Inverters

SkyBox Inverter Settings
The settings below should be programmed into the unit under the Custom choice.

Inverter Maximum SOC Minimum SOC Absorb Charge Absorb Voltage Absorb Time Float Charge Float Voltage Float Time Re-float Voltage Re-bulk Voltage Equalize Voltage Minimum Equalize Time Max Charge Current (Adc)
Max Discharge Current (Adc)
Grid Charge Limit (kW) Low Battery Cutout LBCO Delay Low Battery Cut-in High Battery Cutout HBCO Delay High Battery Cut-in Battery Series Battery Model Number Battery Description Battery Total Amp-Hours
Charge Efficiency Factor Absorb End Amps

100% 20% Timed 54.4 Vdc 02:00 hr Disabled Can be left at default Can be left at default 54.4 Vdc 52.5 Vdc 54.4 Vdc 00:00 LFP-5 & LFP-10: 50Adc eVault: 100Adc eFlex: 55Adc LFP-5 & LFP-10: 90Adc eVault: 125Adc eFlex: 60Adc
Site specific 50 Vdc
15 seconds 51.0 Vdc 56.0 Vdc
10 seconds 55.5 Vdc Custom Custom
Fortress Power eFlex: 105Ah LFPP-10: 200Ah eVault: 360 Ah
96% 1Adc

. . . 505 Keystone Rd, Southampton, PA 18966 (877) 497 6937 sales@fortresspower.com Fortresspower.com

Rev1.4_5-13-21

How To Set Up Fortress Power Lithium Batteries Using Outback Inverters

Charge Controller Settings
Charge Controller Absorb Voltage and Time Float Voltage Rebulk Voltage DC Current Limit
Absorb End Amps

54.4, 2 hours 54.4
52.5 note: higher than inverter LFP-10: 80A per battery ÷ # of controllers eVault: 170A per battery ÷ # of controllers eFlex: 55A per battery ÷ # of controllers
1A

Communication Settings
FLEXnet DC (FN-DC)
Battery Amp hour
Charged Voltage Charged Time Charged Return Amps Battery Charge Relay Invert Logic Relay Voltage Relay Delay MATE3/MATE3s FLEXnet DC Advanced FLEXnet DC Advanced

If FLEXNET DC display voltage is not within 0.1V of inverter terminal voltage, calibrate Outback equipment
eFlex :105Ah per battery LFP-10: 200Ah per battery eVault: 360Ah per battery
54.0V 15 minutes
1A 96% No High = 53.8  Low = 51.2 High = 1, Low = 0
Low SOC Warning = 15% Critical SOC Warning = 10%

Calibrate FlexNet DC Instructions: https://www.outbackpower.com/downloads/documents/appnotes/fndc_field_cal_app_note.pdf

. . . 505 Keystone Rd, Southampton, PA 18966 (877) 497 6937 sales@fortresspower.com Fortresspower.com


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