Fortress Power eFlex 5.4kWh LFP Battery

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Sale price$3,150.99 Regular price$3,500.00


Fortress Power eFlex 5.4kWh LFP Battery

Introducing the Fortress Power eFlex 5.4kWh LFP Battery - the flexible and efficient energy storage solution for your home or business. With a compact 5.4kWh capacity, this lithium iron phosphate battery pack can provide reliable power backup for shorter periods and is perfect for those looking for a smaller energy storage solution.


  • Compact 5.4kWh battery pack
  • Lithium iron phosphate (LFP) technology for long-lasting performance
  • Advanced battery management system for optimal performance and safety
  • Easy to install and maintain
  • Compatible with a wide range of solar inverters and charge controllers
  • Designed to withstand harsh environments and extreme temperatures
  • UL9540 and UN38.3 safety certifications
  • 7-year warranty for added peace of mind.

With the Fortress Power eFlex 5.4kWh LFP Battery, you can rest easy knowing that your energy needs are fully covered, even during power outages. This powerful and durable battery pack is the perfect addition to any solar panel system, providing you with reliable and sustainable energy storage for years to come. It's also a great choice for those who have limited space and looking for a compact energy storage solution.

Name eFlex 5.4
Total Energy(kWh) 5.4
Max. Charge Current (Continuous) [A] 100
Max. Discharge Current (Continuous) [A] 60
Max. Pulse Current (for 5 sec) [A] 130
Capacity [Ah] 105
Voltage Range [V] 48-55
Charging Temperature [F] 32 to 113
Discharging Temperature [F] 32 to 140
Storage Temperature [F] 32 to 95
Dimension [L x W x H, inch] 21.5 x 17.5 x 7.2
Weight [lbs] 116
Life Cycles 6000 @ 80% DoD
Round Trip Efficiency >98%

Order shipment preparation takes 3 days. Once shipped orders usually take 2 weeks to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.

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