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Fortress Power FlexTower Full System Enclosure

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FlexTower

$1,485.00
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Fortress Power FlexTower Full System Enclosure | All-in-One Solar + Storage | IP65 Rated | Whole-Home Backup

Simplified Energy. Complete Control. Built to Last.

The Fortress Power FlexTower is a complete energy storage solution that integrates a battery, hybrid inverter, charge controller, and monitoring system into one weatherproof enclosure. Designed for quick installation and reliable performance, the FlexTower delivers intelligent solar + storage power for residential and commercial applications.

With its rugged IP65 / NEMA 3R-rated enclosure, built-in LCD interface, and mobile app connectivity, the FlexTower is suitable for both indoor and outdoor installations. It provides a powerful and flexible platform for energy independence, grid resilience, and emergency backup power.

Key Features

  • All-in-One Solar + Storage System:
    • Combines battery, hybrid inverter, MPPT charge controller, and control interface
    • Single enclosure simplifies installation and system design
    • Reduces external wiring and equipment requirements
  • Indoor / Outdoor Rated Construction:
    • IP65 and NEMA 3R rated enclosure
    • Weather-resistant design for harsh environments
    • Flexible installation locations including garages, basements, or outdoors
  • Fast, Code-Compliant Installation:
    • Pre-cut side knockouts and integrated combiner
    • Dedicated AC/DC wiring access points
    • Optional rapid shutdown button for NEC compliance
  • Whole-Home Backup Without Subpanel:
    • Built-in 200A grid pass-through
    • Eliminates need for backup load subpanel
    • Includes pre-wired battery cables and full inverter integration
  • Remote Monitoring & Local Control:
    • Integrated LCD screen for on-site system management
    • Remote monitoring via Fortress Power mobile app
    • View performance data, adjust settings, and receive alerts
  • High Efficiency Performance:
    • Over 98% roundtrip battery efficiency
    • CEC-rated inverter performance
    • Maximizes solar production and system ROI

Applications

  • Residential solar + storage systems
  • Commercial and light industrial backup systems
  • Off-grid energy installations
  • Zero-export, time-of-use optimization, and demand response
  • Virtual Power Plant (VPP) participation

What’s Included

  • 1 × Fortress Power FlexTower Enclosure
  • Pre-installed Hybrid Inverter
  • Integrated Charge Controller
  • LCD Interface Panel
  • Battery Cables & Internal Combiner
  • Mobile App Monitoring Access
  • Optional Rapid Shutdown Button (Sold Separately)

Battery model varies by configuration. Compatible with Fortress Power eVault MAX, eFlex MAX, and LFP-10 MAX battery systems.

Specification Sheets:

Fortress Power FlexTower Specifications (PDF)

Manuals:

Fortress Power FlexTower Installation Guide & Owner Manual (PDF)

Specifications

Parameter Details
Operating Temperature Range32°F ~ 114°F (0°C ~ 45°C)
IP RatingIP65 / NEMA 3R
Enclosure Weight265 lbs (120 kg)
Dimensions (W × H × D)29.2 × 83.78 × 17.8 in (742 × 2128 × 452 mm)
CoolingFan Cooling
Warranty3 Years
CommunicationCAN, Modbus, RS485, Wi-Fi
CertificationsUL 1741, UL 1973, UL 9540, UL 9540A
Side Knockouts Left: 2″ (3), 1.5″ (1), 1.25″ (1), 1″ (1)
Right: 2″ (3), 1.5″ (1), 1″ (1)

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric Formula & Example
Energy Consumption (Wh) Formula: Watts × Hours
Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah) Formula: Watt-hours ÷ System Voltage (V)
Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W) Formula: Total Watts × 1.25 (safety margin)
Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W) Formula: Sum of all appliance watts used simultaneously
Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery Formula: (Battery Ah × Voltage) ÷ Total Load (W)
Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application System Recommendation
Basic lighting + phone charging Recommended Battery: 50Ah – 100Ah (12V)
Inverter Size: 100W – 200W
Notes: For small backup setups
Home office (laptop, fan, TV) Recommended Battery: 150Ah – 200Ah (12V or 24V)
Inverter Size: 500W – 1000W
Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights) Recommended Battery: 200Ah+ (24V or 48V recommended)
Inverter Size: 1000W – 1500W
Notes: Ideal for longer backups or heavier loads
Business / shop power backup Recommended Battery: 300Ah+ (48V system)
Inverter Size: 2000W – 3000W
Notes: Suitable for commercial setups or extended power outages

Why Shop With Us

  • Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products backed by full manufacturer warranties.
  • Fast, Reliable Shipping: Shipped from U.S. warehouses with quick, dependable freight options — keeping your project on track.
  • 30-Day Hassle-Free Returns: Changed your mind? Enjoy a simple 30-day return process for peace of mind.
  • Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just experts who know off-grid power systems.
  • Expert Energy Guidance: Our solar and backup energy specialists are here to help with system design, product questions, and installation tips.
  • USA-Based Service: Local, knowledgeable, and friendly support right here in the U.S.
  • Secure Payments: Shop confidently with encrypted, secure checkout protecting your personal and payment information.
  • Built for Energy Independence: Whether powering a cabin, prepping for emergencies, or going off-grid, our products are chosen for performance, reliability, and sustainability.

Fortress Power FlexTower Full System Enclosure

$1,485.00