Excessive engine bay heat ranks among the leading causes of premature battery failure, particularly in turbocharged, supercharged, or heavily modified vehicles where underhood temperatures climb fast. The Heatshield Products Stealth Battery Shield wraps your battery in a custom-fit enclosure built from naturally acid-resistant volcanic rock fiber, blocking radiant heat before it degrades plates, electrolyte, and overall battery capacity.
Volcanic rock fiber construction. Unlike traditional reflective foil or fiberglass wraps, this shield uses volcanic rock fiber that resists acids naturally and outlasts conventional heat shielding materials. It handles continuous exposure up to 1200°F and intermittent spikes up to 2000°F, giving it far more thermal headroom than most engine bays will ever demand.
Custom-fit design with a sleek black finish. Each Stealth variant is sized to a specific battery group, so it fits cleanly without trimming, gaps, or improvised mounting. The black finish keeps the engine bay looking intentional rather than patched together, complementing both stock and built engine bays.
Compatible with every battery chemistry. Lead-acid, AGM, gel, and lithium batteries all benefit from reduced heat exposure. Whether the vehicle sees daily commutes, weekend strip passes, or road course laps, the shield protects the battery through all of it.
Product Benefits
- Extends Battery Life: Reduces heat-related wear on plates and electrolyte to delay premature failure.
- 1200°F Continuous Rating: Handles sustained underhood heat far beyond typical engine bay conditions.
- 2000°F Intermittent Rating: Withstands short-duration heat spikes from exhaust, turbos, or superchargers.
- Naturally Acid-Resistant: Volcanic rock fiber construction resists battery acid without degrading over time.
- Custom-Fit Per Battery Group: Available in sizes for Optima 35, Group 34/78, Group 65, Group 94R, Group 49/H8, and more.
- Outlasts Reflective Alternatives: Durable volcanic fiber outperforms traditional foil-faced heat shielding materials.
- Made in the USA: Manufactured domestically using premium high-temperature materials.
- Fast Installation: Fits in minutes with no cutting or modification required.
About Heatshield Products: Heatshield Products designs and manufactures thermal management solutions for automotive, marine, and industrial applications in the USA. The company focuses on high-temperature materials, including its proprietary volcanic rock fiber laminates, to address heat-related reliability and performance issues across a wide range of vehicle platforms.
WARNING: California Residents: Cancer and Reproductive Harm;
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