TAU® - 3in1 emergency keyring power bank

$29.90

DESIGNED IN SWITZERLAND

TAU® is the emergency power bank for every device (Lightning, Micro USB, USB-C). Its keyring form factor is perfect to let you attach it to your keys when carrying it around.
Color :
Charcoal Black
Pure White
Agave Green
$29.90

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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

    Based on 1060 reviews
    51%
    (539)
    33%
    (348)
    16%
    (172)
    0%
    (1)
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    T
    T Sevandhi A Fernando
    Love that it is so compact and light

    Love that it is so compact and light. Maybe the battery capacity could have been slightly higher. Take care. Best regards Sevandhi

    D
    Daniel Weiser
    Great products

    2nd product I purchase from the company Rolling Square, always satisfy, fast delivery, great products, clever, nice build quality.Thanks

    A
    AP
    Good

    Good company

    B
    Bambi Boland
    Great company creating awesome products…

    Great company creating awesome products tailored to a very specific problem. Always a bonus that the packaging is ALL paper!! Couldn't recommend more.

    I've used the TAU 1 and recently got the TAU 2, both awesome mini powerbanks that saved my phone on more than one occasion. The Nakey phone case is another favorite, exactly what I would want from a phone case: it looks like a naked phone but its protected all around.


    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® Power bank
    • TAU® Dock & Micro USB power cable
    • Screws and wall plugs
    • Nano suction double-sided layer
    • User manual
    • Eco-friendly packaging

    Frequently Bought Together

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    $29.90
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    Charcoal Black
    Pure White
    Agave Green
    $29.90
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    Lava Black
    Sapphire Blue
    Marble Beige
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    compatible with every smartphone and portable device

    Dual: Lightning for Apple devices (iPhone, iPad, Airpods) + Micro-USB devices, in a single proprietary connector

    USB-C: compatible with most recent Android phones and latest generation portable devices

    A power bank has never been so light and compact

    Standard power banks are too bulky to be carried in your pocket and often left behind.
    TAU® is so small and light (40g/1.4oz) that you will forget you have it with you, until you need it.

    Always Charged

    Thanks to its dock, you will never forget to charge TAU®. Once you get back at home, just place your keys with TAU® in its magnetic charging dock, so when you go out, you will always have a fully charged power bank with you.

    Effortless setup

    Place the repositionable nano suction layer where you prefer, plug the cable 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.