Fortress Power Mat Kit Add-on

The Fortress Power Heat Mat Add-On is a single silicone heating mat designed to extend cold climate battery protection to additional eFlex or eFlex MAX batteries within an existing DuraRack enclosure — the ideal companion accessory for any multi-battery DuraRack installation already equipped with the Heat Mat Kit.

Key Features:

• Single 70W Silicone Heat Mat for Additional Battery Coverage: Expands the heating capacity of an existing Heat Mat Kit installation by adding dedicated thermal protection to each additional eFlex or eFlex MAX battery unit in the DuraRack.
• Adheres Directly to the eFlex or eFlex MAX Battery Surface: The flexible silicone mat mounts directly onto the battery for targeted, efficient heating exactly where it is needed to maintain optimal battery operating temperature.
• Connects to Existing Heat Mat Kit Infrastructure: Designed to integrate seamlessly with the DuraRack's existing DIN rail thermostat and AC outlet from the Heat Mat Kit — no additional thermostat or outlet required for each add-on mat.
• Supports Up to 14 Units in Parallel — 980W Maximum Total Heating Capacity: Additional mats connect in parallel to the existing heating circuit, scaling thermal protection across all batteries in a fully loaded DuraRack installation.
• Purpose-Built for Cold Climate Multi-Battery DuraRack Systems: Ensures every eFlex or eFlex MAX unit in the enclosure receives equal and consistent thermal protection during low ambient temperature conditions.

The Fortress Power Heat Mat Add-On is the essential cold weather expansion accessory for any DuraRack installation housing more than one eFlex or eFlex MAX battery. While the base Heat Mat Kit covers the first battery and provides the thermostat and DIN rail infrastructure, each additional battery in the enclosure requires its own dedicated heat mat to ensure consistent, reliable thermal protection across the entire battery bank.

Maintaining optimal battery temperature in cold climates is critical to preserving lithium iron phosphate cell health, maximizing charge acceptance, and extending the overall cycle life of the battery system. The Heat Mat Add-On ensures no battery in the DuraRack is left unprotected, delivering whole-system cold climate confidence for every installation regardless of how many batteries are installed.

Technical Specifications