Tired of getting stranded with a dead phone?
Never run out of juice with TAU
The smallest powerbank in the world!
TAU® - 3in1 Emergency keyring powerbank
DESIGNED IN SWITZERLAND
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TAU® is the best 3in1 power bank, fitting the Lightning, Micro USB, and USB-C ports. It’s the smallest power bank in the world, so you can attach it to your key chain, and comfortably use it in your daily life. It’s the best portable power bank and alternative to your regular, heavy battery charger.
TAU® features a USB-C and our patented Lightning + Micro USB cable, and is compatible with virtually every portable device in the world. Thanks to its proprietary dock, charging it is as easy and seamless as hanging your keys once you get home.
Designed with love ❤️️ in Switzerland
Customer Reviews
Early days so haven't tested the longevity of the battery yet which is why I gave 4 stars and not 5.
But when I do love is the design. I love that the leads come attached and fit snugly into the bank itself. It is light. And the clip to attach it to your keyring/keys is a small but good detail. So long as the battery lasts then I imagine this will replace all my portable chargers
I’ve had my TAU ever since they first came out. It’s never let me down. Wonderful product. If it ever stops working, I’ll definitely purchase a new one. They make excellent gifts. My kids absolutely love them.
Great gadget, great construction. Cool packaging. All around, would suggest to friends and family
I bought a TAU 2-pack and they are great. For us its a easy way to hang our Keys while always having a charger. Build quality is excellent and always having Both a usbc and lightning cable on hand is amazing!
I had to contact customer service because my package didn't arrive (think its a postal issue and not the company's fault) they replied fast and got my package very fast! Thanks again David grom customer support. You deserve a raise;)
TAU is my third product I have purchased from Rolling Square.
The other two were Edge - The First Modular Work From Home Kit, and the inCharge 6 - The Swiss Army Knife of Cables. These were purchased via the indiegogo Crowdfunding website.
All I can say is they have done it again by developing a quality product for our new normal mobile work life.
Not only are are they quality well designed products. Rolling Square have an amazing Customer Service Team who will go the extra mile to help.
Always charged. How is it possible?
The TAU®’s magnetic charging dock fixes onto a counter or wall easily, making it effortless to recharge your power back. Just hang your keys on the dock when you get home and the TAU® will be ready to go when you head out next! The integrated cables mean that you can be ready to charge any device at any time.
Always with you. What does that mean?
If standard power banks are too bulky to be carried in your pockets and often left behind, TAU® is so small and light (only 40g / 1.4oz) that you will almost forget to have it with you.
Alway ready to use
TAU® is compatible with every smartphone and portable device thanks to its two integrated cables:
• Dual - Patented connector combining Lightning for Apple devices (iPhone, iPad, AirPods) + Micro USB (older portable devices / Android phones)
• USB-C - Compatible with any Android phone and newest generation portable devices
Effortless setup
Place the repositionable nano suction layer where you prefer, plug the cable in and TAU® is ready to use. And if you are a DIY aficionado and 100% sure that you aren't going to move your dock, you can also use the screws included in the packaging.
Compatibility
• Lightning (iPhone, iPad, AirPods)
• USB-C devices
• Micro USB devices
Technical
• Size 60x45x12mm / 2.32x1.77x0.47in
• Weight: 40g / 1.4oz
• Capacity 1400 mAh
• Holdable weight: 350gr / 12oz
• TAU® Powerbank
• TAU® Dock & Micro USB power cable
• Screws and wall plugs
• Nano suction double-sided layer
• User manual
• Eco-friendly packaging
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