Fortress Power eVault Max 18.5 User manual
1
11-01-21 REV1.0
System Start Up After un-boxing, turn on unit by hold-
ing the push button for ~10 seconds
(wait for the green status light to turn
on)
• Verify Voltage is above 49V on
the LCD Screen
• Turn battery off if Voltage is
above 49V
If Voltage is below 48V, contact tech
support
• Turn on the inverter DC input disconnect
• Turn on the eVault Max(s) using the push
button
Read this entire document, in addition to the Installation Manual,
before installing or using eVault Max. Failure to do so
or to follow any of the instructions or warnings in this
document can result in electrical shock, serious injury, or
death, or can damage eVault Max, potentially rendering
it inoperable.
1
2
49+V
• Turn the DC breaker on the eVault max to
the “On” position
4
ON OFF
QUICK START GUIDE
eVault Max 18.5
Before starting up the battery for the first time ensure the
following:
The system inverter/equipment is De-energized
eVault Max is Turned off (screen off)
eVault DC breaker is in “Off” position
• For single battery systems set the Battery
ID to 0
• For multiple battery systems. set the bat-
tery ID to 1, 2, 3...N
• NOTE: Please see the full installation manual
for multi-battery systems
• Power cycle the battery by using the push
button after changing this value.
3
• With the battery off, connect proper DC ca-
bling to the terminals of the eVault Max
• Land the other ends on the inverter DC input,
or bus bar/battery combiner
5
ON OFF
7
Battery ID
• When configuring closed loop communication
set this ID to match your inverter type.
• Fortress/SolArk RS485 = 1 SMA CAN = 2
• Fortress CAN = 3 Victron CAN = 4
• Schneider RS485 = 5
Protocol ID
• For multiple battery systems you will need to
set the battery termination resistor of the first
and last battery to ON, with all others set to
OFF.
• In addition, you will need to connect the
included ethernet communication cables as
shown from battery-to-battery
120Ω
ON
120Ω
OFF
120Ω
ON
COM_ParallelCOM_Parallel COM_Parallel
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
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2
11-01-21 REV1.0
Inverter Programing for eVault Max
Before operating the eVault Max be sure to read
the Quick Start Guide, this Setup Guide. and the
full Installation Manual.
It is critical to program your inverter or charge
controller’s settings for correct operation, im-
proper programming of your system equipment
may invalidate your battery warranty and could
degrade system performance.
3
4
1
2
Basic Battery Settings
170A Max Charge Current
(per battery)
180A Max Discharge Current
(per battery)
360Ah Battery Capacity
(per battery)
54.4V Absorption Voltage
54.4V Equalization Voltage
(or Disabled)
Charging Settings
Float Voltage
54.4V
for open loop control
Li-ion Battery Type
(or Custom programmed per Step 2)
30 Equalization Days
(or Max Number)
0Equalization Hours
(or Lowest Number)
49V Shutdown Voltage
(or nearest voltage)
51.8V Cut-in Battery Voltage
Discharge/Cutoff Settings
Cut-out Battery Voltage
51.4V
for open loop control
98% Charging Efficiency
(if required)
5mΩ Battery Resistance
(Applicable to Sol-Ark)
BASIC SETUP GUIDE
eVault Max 18.5
Advanced Settings
for closed loop control
Closed loop is only supported by select inverters and
requires a custom communication cable.
For detailed instructions on implementation and a full
compatibility list please visit our website at:
http://fortresspower.com/inverter-guides
3USB Logging
The eVault Max includes a USB stick for data logging
information from the battery when requested by tech
support. This should be left unplugged when not in use
or it can cause performance issues with the battery.
120Ω OFF
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
COM_ParallelINVERTER
CAN RS485 IN OUT USB Logging
USB Port
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1
