eVault Max 18.5kWh Lithium Ferro Phosphate (LFP) Installation
6. OPERATING
6.1 OPERATING ENVIRONMENT
See “3.1 Technical Data” Table on page 5
6.2 CHARGING
Never attempt to charge a battery without rst reviewing and understanding the instructions for the charger being
used. Only use a Fortress Power Approved Lithium Ferro Phosphate (LFP) charger if ancillary charging is required
before installation, testing or troubleshooting. Failure to use a Fortress Power approved LFP charger will damage
the battery and void the warranty.
CAUTION! Do not attempt to charge the battery below 32°F (0°C).
Attempts to charge at subfreezing temperatures can adversely aect State of Health (SOC) and cycle life
and will void the warranty; never charge battery if it is frozen; never charge a visibly damaged battery.
6.2.1 Charging Stage - Please follow the following steps to use the charger to charge the battery:
1. Connect the charger leads to the battery.
2. Make sure that the charger lead, both at the charger and the battery side, connections are tight.
3. Turn the charger on.
CAUTION! Recommended charging current is 80A, Max. 170A (Please follow the specication on
Fortress Lithium Battery Datasheet.)
6.3 DISCHARGING
• Do not discharge battery below operating voltage.
• Do not discharge battery at rates greater than maximum continuous current.
• Do not operate in conditions that will exceed the internal operating temperatures of the battery.
6.4 PARAMETER SET UP GUIDE IN CHARGER/INVERTER
Before commissioning the energy storage system, the appropriate controller and inverter settings must be
programmed per the manufacturer’s recommendations. Consult the manufacturer’s manuals and/or access
technical support (Schneider, Sol-Ark, SMA, Magnum, Darfon, Outback).
Although Fortress Lithium batteries can perform at very high rates and depths of discharge within a very wide
temperature range, in order to achieve extended life cycles and to comply with the Warranty, the following
guidelines should be followed:
Understand Charge Stage
1. Bulk Charge: Charge at Constant Current (CC) to
Bulk/Absorb Voltage
2. Absorption Charge: Maintain Constant Bulk/
Absorb Voltage (CV)
3. Terminate when charge current drops below
0.05C
4. Unlike Lead Acid batteries, Lithium Ferro
Phosphate batteries do not require Float Charge