Eflex Install Manual
Rev. 1.92
505 Keystone Rd, Southampton, PA 18966, USA . (877) 497 6937. sales@fortresspower.com .
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5. OPERATION
5.1 Charging
CAUTION! Do not attempt to charge the battery below 32 degrees F (0 degrees C).
Attempts to charge at subfreezing temperatures can adversely affect State of Health
(SOH) and cycle life and will void the warranty; never charge battery if it is frozen; never
charge a visibly damaged battery.
5.1.1 Use the following steps to charge the battery with an external charger:
1. Connect the charger leads to the battery.
2. Make sure that the charger leads, both at the charger and the battery side,
connections are tight.
3. Turn the charger on.
CAUTION! Recommended charging current is 55A, Max. 100A (Please follow the
specification on Fortress Lithium Battery Datasheet.)
5.2 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.
5.3 Parameter set up guide for 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.
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: