NFL Star Bryce Huff Retires at 27 to Launch Battery Safety Startup

The former defensive end is trading the gridiron for the battleground of lithium-ion battery safety.

Apr. 11, 2026 at 4:57pm by

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A cubist-style painting depicting a football player in mid-motion, their body broken down into sharp, overlapping geometric shapes, set against a background of glowing, neon-colored lithium-ion battery cells, conceptually representing the transition from sports to technology entrepreneurship.A former NFL star trades the gridiron for the battleground of battery safety, using his athletic discipline and leadership to tackle a critical technological challenge.San Francisco Today

Bryce Huff, a former NFL defensive end who spent several seasons with the Philadelphia Eagles and San Francisco 49ers, has announced his retirement from professional football at the age of 27 to launch a new technology startup focused on improving lithium-ion battery safety and prevention of fires and explosions.

Why it matters

Huff's pivot from the football field to the world of battery technology innovation signals a broader trend among elite athletes seeking to translate their discipline, leadership skills, and public platforms into solving critical real-world problems beyond the realm of sports.

The details

After going undrafted out of college, Huff worked his way up to become one of the highest-paid undrafted players in NFL history, earning a lucrative contract extension with the 49ers. Now, he is leaving the sport to found Naberstone, a startup that aims to develop new detection, containment, and suppression systems for lithium-ion battery failures, which pose growing risks as the world rushes toward electrification.

  • Huff announced his retirement from the NFL on April 11, 2026.
  • Huff plans to launch Naberstone, his new battery safety startup, in the summer of 2026.

The players

Bryce Huff

A former NFL defensive end who spent several seasons with the Philadelphia Eagles and San Francisco 49ers before retiring at age 27 to launch a battery safety startup called Naberstone.

Naberstone

A new technology startup founded by former NFL player Bryce Huff, focused on developing innovative solutions to improve the safety and prevent failures of lithium-ion batteries.

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What’s next

Huff plans to officially launch Naberstone, his new battery safety startup, in the summer of 2026.

The takeaway

Bryce Huff's transition from the NFL to founding a battery safety technology company represents a broader shift in how elite athletes are leveraging their skills, discipline, and platforms to tackle critical real-world problems beyond the realm of sports.