Plainwork / Catalogue / Carry-On Charge
Is your power bank allowed on your flight?
A free checker that turns mAh into watt-hours and applies the 2025-26 airline rules, plus a sourced rules table and a guide to cabin-safe power banks.
- mAh and voltage to Wh, or enter the printed Wh
- Verdict per airline: fine, ask first, or not allowed
- Warning when an estimate sits near the 100 Wh line
- Dated airline rules table with a source link for each row
- Buying guide by class, chosen from the Wh arithmetic
27,000 mAh at 3.7 V is 99.9 Wh, which is under the 100 Wh line, so it is fine to carry on Scoot (two banks at most, none used or charged in flight, not in the overhead bin) and on Emirates (one bank under 100 Wh). But if the cells are rated 3.85 V the same bank is 103.95 Wh: Scoot says ask first, and Emirates says no, because it allows only banks under 100 Wh. The checker shows both numbers and tells you to find the Wh printed on the label.
See the full table on the airline power bank rules page, or read how to choose a power bank that is fine in the cabin.
Made for
Who it's for
Does the arithmetic
Wh = mAh x volts / 1000, shown with the 3.6 to 3.85 V range so you see when an estimate could flip the answer.
Dated and sourced
Each airline row shows the date the rule took effect, the date I last checked it, and a link to the notice or a report quoting it. Airlines I could not source are left out.
Private and free
Runs in your browser, stores nothing and needs no sign-up.
How it works
How it works
Start
Open the checker.
Open
Type the mAh or the printed Wh and pick your airline.
Use
Read the verdict, the arithmetic and the source.
Questions
Good to know
Is a 20,000 mAh power bank allowed on a plane?
About 74 Wh at 3.7 V, under the common 100 Wh limit, so yes on every airline in the table, subject to the count and use-in-flight rules.
Can I use a power bank during the flight?
Not on Singapore Airlines, Scoot, Emirates or Lufthansa Group, per their notices. Charge devices and the bank before boarding.
How do you make money?
Store links are affiliate links through Plainwork Digital. As an Amazon Associate, Plainwork Digital earns from qualifying purchases, at no extra cost to you.
How current are the rules?
Checked 15 October 2026. Airlines change them often, so confirm with yours before you fly.
Carry-On Charge
Check any power bank against airline limits: Wh, number of banks and use in flight.
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