Stackable Batteries

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  • Fortress Power eFlex Max 5.4KWH 105AH 48V Battery

    Fortress Power eFlex Max 5.4KWH 105AH 48V Battery

    $1,449.00

    The eFlex MAX 5.4 kWh is a high-performance 48V lithium iron phosphate (LFP) battery engineered for maximum flexibility, reliability, and long-term energy savings. Designed to operate in demanding environments — from homes and apartments to off-grid cabins, RVs, and boats — it delivers uninterrupted backup power with smart inverter integration and advanced system communications.

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  • Fortress Power eForce 28.8KWH Modular 200AH 48V Battery

    Fortress Power eForce 28.8KWH Modular 200AH 48V Battery

    $11,684.00

    The eForce Stackable Energy Storage System is Fortress Power’s most advanced and scalable solution for whole-home backup, off-grid living, and solar self-consumption. Each 9.6 kWh lithium iron phosphate (LFP) battery is designed for long-lasting performance with 8,000 cycles and a 20-year design life, making it ideal for residential and light commercial applications.

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  • Fortress Power eForce 19.2KWH Modular 200AH 48V Battery

    Fortress Power eForce 19.2KWH Modular 200AH 48V Battery

    $8,039.00

    The eForce Stackable Energy Storage System is Fortress Power’s most advanced and scalable solution for whole-home backup, off-grid living, and solar self-consumption. Each 9.6 kWh lithium iron phosphate (LFP) battery is designed for long-lasting performance with 8,000 cycles and a 20-year design life, making it ideal for residential and light commercial applications.

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  • Fortress Power eForce 9.6KWH Modular 200AH 48V Battery

    Fortress Power eForce 9.6KWH Modular 200AH 48V Battery

    $4,394.00

    The eForce Stackable Energy Storage System is Fortress Power’s most advanced and scalable solution for whole-home backup, off-grid living, and solar self-consumption. Each 9.6 kWh lithium iron phosphate (LFP) battery is designed for long-lasting performance with 8,000 cycles and a 20-year design life, making it ideal for residential and light commercial applications.

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