This is an add-on heat mat kit for Fortress Power DuraRack battery systems, built to bring cold-weather protection to a DuraRack installation that doesn't already have heating capability. It's for installers and homeowners running DuraRack batteries in unheated garages, sheds, or outdoor enclosures where ambient temperatures drop below the battery's safe charging range.
Fortress Power builds its DuraRack ecosystem around lithium iron phosphate (LFP) chemistry, and temperature management is part of keeping that chemistry safe and performing well over the life of the system. A heat mat kit like this one is a component-level accessory, not a full battery replacement part, so correct fitment to your specific DuraRack configuration matters before you install it. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Critical Fitment & Requirements
- Designed as an add-on heat mat kit for the Fortress Power DuraRack battery system.
- SKU: HEATMATKITADD.
- Detailed electrical specs (voltage rating, wattage, wire gauge, connector type) are not included in the manufacturer data provided for this listing — [NEEDS VERIFICATION].
- NOT confirmed for use with Fortress Power eFlex MAX, eVault MAX, eForce, eBoost, Avalon, Flextower, or Guardian systems.
- NOT a substitute for the base/primary DuraRack heat mat kit if one is required for initial installation — confirm sequencing with Fortress Power documentation before ordering.
Heat mat kits draw parasitic current whenever ambient temperature drops below the battery's charge threshold, and that draw competes with other loads on the same circuit if the wiring wasn't sized for it. Verify the heat mat's actual current draw against the circuit or fused connection feeding it before energizing — an undersized feed can nuisance-trip a breaker or, worse, run hot under sustained low-temperature cycling. Confirm draw and connection integrity with a clamp meter or multimeter before you close up the enclosure, and torque any terminal connections to the DuraRack manufacturer spec listed in the installation manual. This keeps the add-on kit from becoming the weak link in an otherwise NEC-compliant DC wiring run.
Key Benefits
- Purpose-built as an OEM accessory for the Fortress Power DuraRack platform, rather than a generic universal heat mat.
- Supports safe low-temperature operation of LFP battery chemistry in unconditioned spaces.
- Add-on design lets you expand heating coverage without replacing existing DuraRack hardware.
- Backed by Fortress Power's documented warranty terms (see Resources tab).
| Spec | Value | Unit |
|---|---|---|
| Part Number | HEATMATKITADD | — |
| Compatible System | DuraRack | — |
| Price | 63.70 | USD |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: Fortress Power DuraRack battery system, as an add-on heat mat accessory.
- Does NOT have confirmed fitment with eFlex MAX, eVault MAX, eForce, eBoost, Avalon, Flextower, or Guardian battery systems.
- Does NOT include documented voltage, wattage, or connector specifications in the source data provided — verify against the DuraRack installation manual before purchase.
| Compliance Item | Detail |
|---|---|
| UL Certification | [NEEDS VERIFICATION] — not specified in manufacturer data provided for this SKU |
| NEC Ampacity Reference | [NEEDS VERIFICATION] |
| IP Rating | [NEEDS VERIFICATION] |
FAQ
What battery system is this heat mat kit designed for?
This is the add-on heat mat kit for the Fortress Power DuraRack battery system. It is not confirmed for use with other Fortress Power battery models.
Is this a standalone kit or does it require an existing heat mat setup?
This is listed as an "Add On" kit, meaning it is intended to supplement or expand an existing DuraRack heating configuration. Confirm with Fortress Power documentation whether a base heat mat kit is required before installing this add-on. [NEEDS VERIFICATION]
What voltage system is this compatible with?
The manufacturer data provided does not specify a voltage rating for this accessory. [NEEDS VERIFICATION]
Where can I find the full installation and warranty documentation?
Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for manufacturer documentation, including installation manuals and warranty terms.
Warranty & Registration
Specific warranty duration and terms for the DuraRack Add-On Heat Mat Kit are not included in the manufacturer data provided for this listing. Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for the current Fortress Power warranty documentation applicable to this part. If you have questions about coverage before you order, ask us — we always reply back.
