rolling-square-tau202e

Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray

A model-level record for checking the exact power-bank identity, energy rating, and supporting evidence behind the catalog entry.

Capacity

2,000 mAh

Nominal voltage

3.70 V

Energy rating

7.40 Wh

Evidence basis

Derived Wh

Battery configuration

Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray is the folded battery configuration for this page. 2 color/SKU variants share the same capacity, voltage, Wh rating, and source-product fingerprint.

2 variants

Configuration ID: rolling-square|rollingsquare com tau 2 a new kind of power bank|2000|3.7|7.4
Model family: TAU® 2 - Emergency keyring power bank - Ice Gray
Configuration evidence: scraped_unverified

Folded variants

TAU® 2 - Emergency keyring power bank - Mercury Black
rolling-square-tau201e

Evidence summary

Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray is recorded at 7.40 Wh from official capacity data and nominal voltage.

1 source

Wh basis: Derived Wh
Last verified: 2026-06-08
Source graph: 1 linked entities

Entity evidence

Official model identifiers and source links used to connect this CertiWatt record with manufacturer, support, recall, and knowledge-graph entities.

Manufacturer model number: Not published
CertiWatt model ID: rolling-square-tau202e
GTIN: Not verified
Brand entity: Rolling Square

Aliases

TAU202E

Source graph

Manufacturer source
rollingsquare.com/products/tau-2-a-new-kind-of-power-bank

What this means for flying

Below threshold

This model is comfortably below the common 100 Wh threshold. You still need a trip-specific check because country, airline, recall, and carry-on rules can add stricter conditions.

This is a catalog-level hint, not a final travel verdict. Final checks depend on the route, airline, recall status, and current rules.

How this Wh value is supported

This model uses a derived rating: 2,000 mAh × 3.70 V ÷ 1000 = 7.40 Wh, stored as 7.40 Wh in the catalog.

Last verified: 2026-06-08
Added to catalog: 2026-06-08
Catalog status: Active
Source links: 1

Identity notes

Also known as

TAU202E

Official Rolling Square product page identifies TAU® 2 - Emergency keyring power bank - Ice Gray and states 2000mAh capacity. Wh is derived from nominal 3.7V because the official page evidence does not publish a durable Wh value.

Manufacturer sources

rollingsquare.com/products/tau-2-a-new-kind-of-power-bank

Quick answers

Can I bring Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray on a plane?

Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray is below the common 100 Wh passenger battery threshold at 7.40 Wh, but country, airline, recall, and carry-on rules can still change the result.

How many watt-hours is Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray?

Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray is recorded as 7.40 Wh from 2,000 mAh and 3.70 V catalog data.

What evidence supports the Wh value for Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray?

The evidence basis is Derived Wh. CertiWatt stores 1 manufacturer source link for this model. The record was last verified on 2026-06-08.

Can Rolling Square TAU® 2 - Emergency keyring power bank - Ice Gray go in checked baggage?

Power banks are generally handled as spare lithium batteries and should be checked against carry-on rules, not placed in checked baggage without a route-specific verdict.

Back to catalog

Related flight guides

China no-3C screeningCan I fly in China with a power bank that has no 3C mark?Short-answer guide to China airport screening for power banks with no 3C / CCC mark, unclear markings, and recalled model or batch risk.Under 100Wh is not enough in ChinaCan an under-100Wh power bank without 3C fly in China?Why an under-100Wh power bank may still be refused on mainland China domestic flights if the 3C mark is missing, unclear, or recall evidence applies.China domestic flight checklistChina domestic flight power bank rulesChina domestic-flight power bank checklist: readable 3C / CCC mark, no recalled model or batch, carry-on only, capacity evidence, and 2026 rule context.Checked baggage answerCan I put a power bank in checked baggage?A short-answer page for checked-baggage power-bank rules and why spare lithium batteries must stay in carry-on.

Capacity and limit context

Brand catalogRolling Square power banksCompare this model with other Rolling Square catalog records.Generally allowed bandPower banks under 100 WhPower banks at or below 100 Wh are generally allowed in carry-on baggage without prior airline approval.