Evault Max Install Manual

V4.2 11-02-21

6. OPERATING

6.1 OPERATING ENVIRONMENT

See “3.1 Technical Data” Table

6.2 CHARGING

Never attempt to charge a battery without first 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 affect 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.

NOTE: Recommended charging current is 150A, Max. 180A

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 PROGRAMMING THE INVERTER/CHARGER

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 the eVault Max 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