505 Keystone Rd, Southampton, PA 18966, USA
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(877) 497 6937
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www.fortresspower.com
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Recommended operating parameters of charger/Inverters For 3,000 Cycles:
• Operating temperature range: 35 F to 120 F (2 °C to 49°C)
Recommended operating parameters of charger/Inverters For 6,000 Cycles:
• Operating temperature range: 35 F to 110 F (2°C to 43°C)
• Storage must be equal to or more than twice the rated output of the Inverter
At the End of Cycle Life capacity is Equivalent to 70% Retained Capacity
CAUTION! Do Not Operate Fortress Lithium Batteries at an average temperature
exceeding 30 °C / 86 F over the life of the battery.
8. TROUBLESCHOOTING
The Battery BMS provides multiple level protection function:
• Over Charge Voltage Protection
• Over Discharge Protection
• Over Current Protection for Discharge Via Thermal Control
• Short Circuit Protection
• ON/OFF Switch
In the event of a fault the battery protection circuit will open its internal relay/mosfet disconnecting the
negative battery terminals form the internal cells. The battery uses a relay/mosfet and precautions
should be taken to reduce voltage spikes and large inductance in the application.
Over Voltage Fault
62.4±0.4V
Over Voltage Recovery
60.8±0.8V
Low Voltage Fault
32.0±0.8V
Low Voltage Recovery
36.80±1.6V
If batteries enter a self-protective mode, negligible voltage readings will be present until the unit resets.
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.
9. SERVICE AND MAINTENANCE
Batteries should be carefully inspected on a regular basis in order to detect and correct potential
problems. This routine should be started when the batteries are first received.
