TAU 2 - A new kind of power bank.

TAU 2 comes from Rolling Square in Lugano, Switzerland — a team with 14 successful campaigns behind them. Their answer is simple: shrink a power bank below AirPods Pro size and clip it onto your keyring, so you're never truly out of power. The 2000mAh reserve rescues your phone in emergencies, the magnetic dock recharges it by simply dropping it in place, and built-in NFC doubles as a tap-to-share digital business card — all in 100% paper packaging. Launched in October 2023, it raised about €246,566 (≈$261K) against a €20,000 goal — around 1,233% funding from 4,675 backers.