Fortress eFlex Max - 5.4kWh 51.2V Battery

Fortress eFlex Max 5.4kWh 51.2V LFP Battery

The Fortress eFlex Max is a 5.4kWh lithium iron phosphate (LFP) battery designed for residential and commercial solar energy storage. With a 51.2V nominal voltage and IP65 outdoor rating, it offers flexible installation options. The modular design allows up to 30 batteries in parallel for scalable capacity, and the built-in battery management system (BMS) ensures safe, reliable operation.

Key Features:

• 5.4kWh usable capacity (105Ah at 51.2V)
• Lithium Iron Phosphate (LFP) chemistry - safest lithium technology
• 51.2V nominal voltage (16S1P configuration)
• IP65 rated for outdoor installation
• Up to 30 units in parallel for scalable capacity (162kWh max)
• Built-in Battery Management System (BMS)
• Wall-mount bracket included
• 10-year warranty
• CAN bus and RS485 communication
• Compatible with leading inverters

Shop the Fortress eFlex Max battery at Portlandia Electric Supply for competitive pricing and expert solar storage advice.