Fortress Heat Mat Kit – Add-On Mat

The Fortress Heat Mat Kit Add-On Mat provides supplemental heating for lithium battery systems in cold environments. Designed for use with the main Fortress Heat Mat Kit thermostat controller, this peel-and-stick heating element expands heating coverage and maintains safe battery operation during freezing conditions.

Key Benefits

Efficient Cold-Weather Heating: Ensures battery safety and performance by maintaining optimal temperature range.

Expandable Design: Connect up to 14 add-on mats in parallel (max 980W total) using the same thermostat controller.

Quick Installation: Adhesive silicone pad applies directly to battery surface—no tools required.

Battery-Compatible: Optimized for use with eFlex Max and FlexTower systems in indoor battery storage applications.

Special Technology

3M-Backed Silicone Material: Durable and flexible, ensuring reliable adhesion and heat transfer.

Safe and Simple Wiring: Cables face the breaker side for correct orientation and easy connection in series.

Designed for Indoor Use: Engineered for enclosed installations with precise thermal control.

Warranty

Covered under Fortress Power’s 2-year limited warranty for indoor battery heater components.

Best Uses

Supplemental Heating: Expands coverage of the main Heat Mat Kit in multi-battery setups.

Cold Climate Battery Installations: Essential for lithium batteries operating in freezing conditions.

Indoor Enclosures: For use within battery cabinets or utility closets.

Specifications Table

About Fortress Power

Fortress Power is a U.S.-based leader in smart energy storage solutions. The company designs reliable, scalable, and easy-to-install lithium battery systems and energy accessories that power everything from homes to businesses. With a focus on innovation, safety, and sustainability, Fortress Power empowers customers to take control of their energy future.

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As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.

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