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TAU® 2 - Emergency keyring power bank
$39.90
Color: Mercury Black
Mercury Black
Ice Gray
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TAU® 2 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.
TAU® 2 is the emergency power bank for every device (Lightning, Micro USB, USB-C). Its keyring fo...
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PRODUCT INFO


TAU® 2 | 3in1 emergency keyring power bank
Introducing TAU 2 - your trusty, always-charged, universal keyring emergency power bank. Never again will you have to suffer the indignity of your phone giving up on you at the worst possible moment. You’ll no longer need to carry bulky power banks to make important calls 📞, pay with your phone 💳, or use GPS maps 🗺️, even towards the end of the day when your phone's battery is running low. 

You'll never forget to re-charge it
With TAU 2, forgetting to charge your power bank is a problem of the past. Charge your TAU 2 just by putting away your keys the way your mother told you. We even took the time to give you a quick and easy way to set up its charging dock on a desk, on a wall, or even the door side table. Now your power bank is always fully charged and within reach right alongside your keys, eliminating the frustration of a dead battery when you're on the go. Your keys are always in the right place and your power bank is always charged. 🔑🔋

Your keys' new best friend
TAU 2 is so small and compact that it easily fits on your keyring without adding any bulk. The fact that it hooks on your keys means that so long as you have your keys you also have power. The fact that it's always charged means that the Charging Dock will serve as your new tidy place for keys, seamlessly recharging TAU 2 without you even noticing, so it's ready for your next departure. Say goodbye to carrying around a separate power bank with cables in your bag or pocket, or worse, forgetting to bring them with you!

Battery capacity
TAU 2 may not immediately captivate with its 2000mAh capacity, but it's truly impressive. 🔍 We tested smartphones from major processor producers, revealing three battery improvement ranges: small-battery phones gained up to 54%, mid-battery phones up to 35%, and large-battery phones up to 28%. We calculated these results conservatively, considering battery consumption data from producers, reviewers, and real-life tests, factoring in dispersion and performance decrements due to background apps. Visit the "battery capacity" section on our Kickstarter's TAU 2 page for a detailed understanding of our tests and results!

Key features (3in1)

  • Charge USB-C devices
  • Charge Lightning devices
  • Charge Micro USB devices

    Extra features

    • Included NFC tag for Digital ID and Lost mode
    • Optional adhesive QR Code stickers for Digital ID and QR Lost mode
    • Pass-through charging (USB-C as input, Lightning/Micro USB as output)
    • Quick-release keyring hook


    Designed with love
    ❤️️ in Switzerland

      TECHNICAL SPECIFICATIONS

      Compatibility

      Lightning (iPhone, iPad, AirPods)
      USB-C devices
      Micro USB devices

      Technical

      Size: 56*x43x19mm (2.2*x1.7x0.7in) *Dimension without hook. Dimension with hook: 63mm / 2.5in
      Weight: 50g / 1.7oz
      Capacity 2000 mAh
      Holdable weight: 690gr / 24oz

      WHAT'S IN THE BOX

      TAU® 2 Power bank

      TAU® 2 Dock with USB-C integrated cable
      Nano suction double-sided layer
      User manual
      Eco-friendly packaging

      REVIEWS
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      TAU® 2 - Emergency keyring power bank
      $39.90
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      Customer Reviews

      Based on 20 reviews
      95%
      (19)
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      H
      Haslinda HB
      Excellent quality

      Products are as shown in website. Excellent customer service. Took a while to reach my part of the world but worth the wait

      m
      mr.chris360
      Great innovative and minimal products

      I’ve ordered a couple of things from this company, from mini power banks, to mini cables, and they always impress. I love the design and aesthetics, and I find them very handy throughout the day

      R
      Raphael Atlan
      Exceptional Customer Service at Rolling Square I recently had a customer service…

      I recently had a customer service experience with Rolling Square that was truly commendable. Faced with an issue with my product, the team, and especially Janice, exhibited outstanding responsiveness and professionalism. Their customer-centric approach and dedication to resolving issues swiftly and effectively have deeply impressed me. A huge shout-out to Janice for her patience and invaluable assistance. I highly recommend Rolling Square for their impeccable after-sales service and will definitely continue to use their products in the future.

      F
      Frederic Naud WhiskyTechFred
      Tau2 is a great product

      Tau2 is a great product Really happy with my purchase, nice upgrade from the previous version.

      Shipped on time and received quickly.