---
product_id: 636128659
title: "Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey"
brand: "rolling square"
price: "397 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Rolling Square"
url: https://www.desertcart.ro/products/636128659-rolling-square-tau-2-2nd-gen-power-bank-keyring-smartphones
store_origin: RO
region: Romania
---

# 2000mAh emergency power Built-in USB-C + Lightning/Micro USB cables Compact keyring design Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey

**Brand:** rolling square
**Price:** 397 Lei
**Availability:** ✅ In Stock

## Summary

> 🗝️ Stay powered, connected, and unforgettable—your ultimate keyring companion.

## Quick Answers

- **What is this?** Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey by rolling square
- **How much does it cost?** 397 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/636128659-rolling-square-tau-2-2nd-gen-power-bank-keyring-smartphones)

## Best For

- rolling square enthusiasts

## Why This Product

- Trusted rolling square brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Networking:** Built-in NFC & QR code digital business card boosts your professional connections instantly.
- • **Power Up On The Go:** 2000mAh capacity delivers up to 30% extra phone battery—never get stranded again.
- • **All-In-One Charging:** Integrated USB-C and dual Lightning/Micro USB cables mean no more cable clutter.
- • **Seamless Everyday Carry:** Sleek, lightweight keyring form factor fits effortlessly with your essentials.
- • **Lost & Found Peace of Mind:** Customizable Lost Mode helps recover your device with ease if misplaced.

## Overview

The Rolling Square TAU 2 (2nd Gen) is a compact 2000mAh power bank keyring designed for professionals on the move. Featuring built-in USB-C and dual Lightning/Micro USB cables, it offers universal device compatibility and fast charging. Its sleek design fits seamlessly on your keyring, while NFC and QR code digital business card features elevate your networking game. With Lost Mode, it also ensures your device can be returned if lost—making it an essential blend of power, convenience, and smart connectivity.

## Description

Free delivery and returns on eligible orders. Buy Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey at desertcart UK.

Review: Great product - Great product. Small enough to carry anywhere
Review: A must have! - This is a must have for any phone user, USB-C, Micro USB and lightning all built in, a great emergency battery size but also acts as a charging cable if you are near a USB outlet, all packaged into a very small pocket friendly little unit. A must have as an emergency back up.

## Features

- EMERCENCY POWER ANYWHERE - TAU 2 is your ultimate emergency keyring power bank. Never get caught with a dead phone again. With a 2000mAh capacity, it provides up to 30% extra battery, ensuring you stay connected when it matters most
- DESIGNED FOR CONVENIENCE - TAU 2 syncs with your daily routine seamlessly. Attach it to your keys thanks to the quick-release keyring hook and never forget to charge it—just place it on the magnetic dock at home or double-tap the logo to charge it via the built-in USB-C port pass-through charging (USB-C as input/output, Lightning/Micro USB as output). Its versatility allows charging in various settings, not just at home.
- UNIVERSAL COMPATIBILITY - Equipped with two integrated cables - USB-C and a custom DUAL cable for both Lightning and Micro USB devices. TAU 2 supports a wide range of devices, ensuring you're always powered up without the need for additional cables
- SLEEK AND PORTABLE - With dimensions rivaling a standard car key fob, TAU 2 is designed to be an unobtrusive yet powerful companion on your keyring. Its lightweight, compact design ensures it’s always there when needed, without adding bulk
- DIGITAL BUSINESS CARD AND LOST MODE - TAU 2 includes a free subscription to Sherr.it, offering a digital business card and Lost Mode. Share your contact information with a simple scan of the QR Code or by bringing a device close to the TAU 2 logo to activate NFC. In case of loss, let the finder know how to return it to you thanks to customizable messages from Lost Mode

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1VKRMGV |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | 391 in Mobile Phone Portable Power Banks |
| Colour | Grey |
| Customer Reviews | 4.3 4.3 out of 5 stars (105) |
| Date First Available | 16 April 2024 |
| Item Weight | 48.1 g |
| Item model number | TAU202E |
| Other display features | Wireless |
| Product Dimensions | 5.59 x 4.32 x 1.78 cm; 48.19 g |
| Special features | Built In Cable, Fast Charging, LED Indicator Lights, Pocket Size |
| What’s in the box | Charging Dock with USB-C integrated cable, Nano suction double-sided layer, QR Code Stickers, TAU 2 Power bank, User manual |

## Product Details

- **Battery capacity:** 2000 Milliamp Hours
- **Brand:** Rolling Square
- **Colour:** Grey
- **Connector type:** USB-C, Lightning, Micro USB
- **Special feature:** Built In Cable, Fast Charging, LED Indicator Lights, Pocket Size

## Images

![Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey - Image 1](https://m.media-amazon.com/images/I/61V1ak+HFsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by A***R on 23 December 2025*

Great product. Small enough to carry anywhere

### ⭐⭐⭐⭐⭐ A must have!
*by M***S on 21 January 2025*

This is a must have for any phone user, USB-C, Micro USB and lightning all built in, a great emergency battery size but also acts as a charging cable if you are near a USB outlet, all packaged into a very small pocket friendly little unit. A must have as an emergency back up.

### ⭐⭐⭐⭐ Not too bad
*by S***T on 2 January 2026*

Yes it is compact but for the price I could probably find another brand with a higher charge capacity.

## Frequently Bought Together

- Rolling Square TAU 2 (2nd Gen) - Power Bank Keyring for Smartphones with Digital Business Card Feature NFC/QR Code, 2000mAh,Compatible with USB-C, Micro USB and Lightning, Grey
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-26*