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Power bank Rolling Square RollingSqaure Tau Red, 1400 mAh, portable external battery
TAU® is a compact portable power bank compatible with Apple (Lightning), MicroUSB and USB-C devices. With a 1400 mAh capacity, it delivers roughly an additional 40% battery life on average for most smartphones, providing a short emergency boost when you need it. The Mars Red colorway is available for a limited number of pieces. Its small size and 40 g weight make it convenient to carry on a keyring or in a pocket.
The integrated charging cables eliminate the need to carry separate leads, allowing immediate connection to a wide range of devices. A magnetic charging dock attaches to a counter or wall for easy recharging and doubles as a key hanger, so the power bank is ready when you head out. The unit’s lightweight, pocket-sized design reduces the chance of leaving it behind while still offering reliable emergency power.
Choose the model with the appropriate integrated cable for your device (Dual for Lightning + MicroUSB or USB-C). To charge a device, connect it directly to the integrated cable and press any required wake/power button on your device; charging begins automatically. To recharge the TAU® power bank, place it on the magnetic charging dock and connect the dock to mains power using the supplied cable. The repositionable nano-suction layer lets you place the dock on a preferred flat surface; screws are included if you prefer a permanent installation.
Keep the power bank attached to your keys or in a consistent spot on arrival at home so it is always recharging on the magnetic dock. Use the Dual model for mixed Apple and MicroUSB device households and the USB-C model for newer Android and USB-C devices. Avoid exposing the unit to extreme temperatures and moisture to maintain battery performance.
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