eVault Max 18.5kWh Lithium Ferro Phosphate (LFP) Installation
KEY POINTS SUMMARY:
1. Each Fortress Lithium Battery contains circuitry that protects the Lithium Ferro Phosphate cells from
overcharging, over-discharging, and excessive load amperage. If the values specied are exceeded, the battery
will enter a protective shut down state. In some cases, this may result in the need to re- initialize an inverter
charger or other pieces of equipment in the installation. In other cases, the inverter’s system settings may be
saved within the inverter memory storage and will not need to be reset. This is not an absolute standard but
is common among most inverter chargers. Check your inverter manufacturer specications.
2. If the battery enters a self-protective mode, negligible voltage readings will be present until the unit is reset.
In some instances, after a prolonged shut down, a charge might need to be manually applied to the energy
storage bank. Should this occur, please contact Fortress Power for technical support. Fortress Lithium
Batteries are designed to remain robust and safe under most circumstances.
3. Although each Fortress Lithium Battery contains circuitry that protects the Lithium Ferro Phosphate cells
from overcharging, over-discharging and excessive load amperage, Fortress Lithium Batteries must always be
installed with a charge controller and the appropriate settings to protect the batteries from open PV and other
high voltage sources. Fortress Lithium Batteries alone will not protect from extreme electrical phenomena.
4. GRID TIED SYSTEMS: Once the Fortress Lithium Battery has been installed, turn on the entire system to test.
Once testing has been completed, please disconnect the batteries from the load center until your local Utility
Inspector is ready to turn on the entire system. The charge controllers and inverter monitoring systems can
drain the Fortress Lithium Batteries over an extended period when the entire system is not fully operational
due to the electrical draw of the system components.
5. OFF GRID SYSTEMS: Do not connect the Fortress Lithium Batteries until the entire system is ready to turn on
and is fully operational.
6. See Charge Controller Settings in the Appendix of this manual. Fortress Lithium Batteries are compatible with
almost all Inverter Chargers and Charge Controllers. Please contact Fortress Power to learn the recommended
settings for any device not explicitly covered in this manual.
4.8 FINAL CONNECTION OF THE INSTALLATION
Final installation and operation guidelines will be dictated by your Electrician and Installer based on the overall
properties of and procedures for the equipment in your installation and any code requirements that apply to
your region. Fortress Power technicians and sales sta are available to provide any additional information on
the Fortress Lithium Batteries as needed. Please be aware of the potential electrical hazards before interacting
with any and all electrical or mechanical devices. Please take all necessary safety precautions in your projects and
installations.
4.9 TURN OFF THE UNIT
If you need to turn o the unit, please push the button for 8 seconds.
5. RETROFITTING
Retrot Fortress Lithium batteries to an existing system is not recommended. Like all other batteries, Fortress
Lithium Battery’s open voltage will diminish during the operation. Parallel batteries with dierent open voltage
may cause reverse currents, which could damage the batteries