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2023 Honoree Award

TAU2 - The smallest universal power bank, 50% more powerful

Rolling Square
  • 2023 Honoree in Mobile Devices & Accessories
TAU2 is the smallest keychain 3in1 power bank in the world with integrated cables (Lightning, MicroUSB and USB-C). It's 50% more powerful than TAU, but, counterintuitively, even more compact.

It's an emergency power bank that can provide a boost of up to 70% of power to a smartphone, and it's smaller than AirPods.

TAU2 comes with a dock that can be fixed on a counter, a wall or a desk. Everyday, when we get back home, we set down our keys somewhere. We exploit that daily habit to recharge TAU2, so it's always charged, without having to think about it.
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Rolling Square focuses on designing products that are actually useful and that provide the best user experience. We have become one of the most successful companies in crowdfunding across the World. Our vision is to keep making products that solve problems while shaping our fast-growing brand. We invite you to see our latest and greatest!

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