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Fortress Power eFlex Max 5.4kWh 48V LFP Battery - Modular Storage

Fortress Power eFlex Max 5.4kWh 48V LFP Battery - Modular Storage

Regular price $3,000.00 USD
Regular price Sale price $3,000.00 USD
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Specification

  • SKU:FP-EFLEXMAX54
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  • Fortress Power eFlex Max — 5.4kWh 48V LFP Battery | Modular

    The Fortress Power eFlex Max is a 5.4kWh lithium iron phosphate (LFP) battery module designed for residential and commercial energy storage. Built with premium LFP cells and an intelligent BMS, the eFlex Max delivers 6,000+ cycles of reliable performance. Its modular design allows stacking up to 6 batteries for 32.4kWh of total capacity, and it communicates seamlessly with leading 48V inverters via CAN/RS485.

    Key Benefits

    • 5.4kWh Modular Capacity — Stack up to 6 batteries for 32.4kWh of scalable storage
    • LiFePO4 Chemistry — Inherently safe lithium iron phosphate with superior thermal stability
    • 6,000+ Cycle Life — Decades of daily cycling with minimal capacity degradation
    • Intelligent BMS — Built-in battery management system with active cell balancing
    • Plug-and-Play Installation — Simple parallel connection — no complex programming required
    • Wide Inverter Compatibility — CAN/RS485 communication with leading 48V hybrid inverters
    • Indoor & Outdoor Rated — Flexible installation in protected environments

    Specifications

    Specification Detail
    Usable Capacity 5.4 kWh
    Nominal Voltage 51.2V DC
    Nominal Capacity 105Ah
    Battery Chemistry Lithium Iron Phosphate (LFP)
    Cycle Life 6,000+ cycles
    Charge/Discharge Current 50A / 100A peak
    Scalable Up to 6 units (32.4kWh)
    Communication CAN / RS485
    Operating Temperature -4°F to 122°F (-20°C to 50°C)
    Dimensions 18.5 × 7.5 × 19.7 in (approx.)
    Weight ~110 lbs (50 kg)
    Warranty 10 years

    What's in the Box

    • Fortress Power eFlex Max 5.4kWh Battery
    • Communication cable
    • Parallel connection cable
    • User manual