Travel Guides

Travel Guides

Step-by-step and reference guides (not breaking news). Newest first. Dates show first publication and the last time we revised the page.

  1. 01

    Is a 27,000 mAh Power Bank Allowed on a Plane? (2026)

    A 27,000 mAh power bank equals 99.9 Wh at 3.7V — just under the 100 Wh limit. Here is what you need to know about flying with one, including how to handle borderline checks.

    June 1, 2024Updated January 15, 20264 min read

  2. 02

    Is a 20,000 mAh Power Bank Allowed on Flights? (2026 Answer)

    Find out if your 20,000 mAh power bank is flight-safe. Quick answer: Yes, 20,000 mAh = 74 Wh which is under the 100 Wh limit. Full details inside.

    March 1, 2024Updated January 15, 20264 min read

  3. 03

    mAh to Wh Calculator: Convert Power Bank Capacity for Flights

    Free mAh to Wh converter for air travel. Understand why airlines use watt-hours, how to do the calculation yourself, and what your number means at the gate.

    February 1, 2024Updated January 15, 20264 min read

  4. 04

    Can You Bring a Power Bank on a Plane? Complete 2026 Guide

    Everything you need to know about bringing power banks on flights. Updated rules for 2026 including carry-on requirements, Wh limits, and airline-specific policies.

    January 1, 2024Updated January 15, 20265 min read