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AMPY, the world's smallest wearable motion charger, transforms the energy from your motion and turns it into power for your devices. Tejas Shastry, Mike Geier, and Alex Smith met in a Northwestern University entrepreneurship class during their engineering PhDs. The trio wanted to solve a problem that most people experience — a dead smartphone battery at the worst time. AMPY is the solution. AMPY is a dual-mode motion charger: It charges from your movement and from the wall. In November, AMPY's Kickstarter campaign was funded more than 300%.

AMPY Questions

The AMPY annual revenue was $5 million in 2026.

AMPY is based in Evanston, Illinois.

The NAICS codes for AMPY are [33, 3359, 335].

The SIC codes for AMPY are [3691, 36, 369].

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