Travel electronics rules 2026: power banks, voltage and cabin limits

Last updated: 12 June 2026 · Data verified: per-airline battery policy table 6 June 2026 against each carrier's published dangerous-goods page; country voltage/plug table 12 June 2026 against IEC world-plugs data.

Three regulators decide what your laptop, power bank, and travel adapter are allowed to do on an aircraft. IATA publishes the Dangerous Goods Regulations (DGR) airlines enforce at the gate; ICAO publishes the underlying Technical Instructions (Doc 9284) the DGR derives from; TSA and EASA layer national-and-regional security rules on top. The result is a small set of hard limits — expressed in Watt-hours, Volts, centimetres, and kilograms — that decide whether your gear flies, gets gate-checked, or gets confiscated.

Power banks and lithium batteries: the 100 Wh / 160 Wh rule

The single most-confiscated travel item is the power bank, because most travellers carry one and almost none can convert their device's milliamp-hour (mAh) label into the Watt-hour (Wh) figure airlines actually regulate. The rule, codified in IATA DGR Section 2.3.5.9 and aligned with ICAO Doc 9284 Packing Instructions 967/970, has three tiers:

• Under 100 Wh — carry-on only, no airline approval required, up to a reasonable personal quantity (typically 2 spare batteries plus those installed in devices).
• 100 Wh to 160 Wh — carry-on only, written airline approval required before boarding, maximum 2 spare batteries per passenger.
• Above 160 Wh — forbidden on passenger aircraft entirely; ship as cargo under full DGR documentation.

Spare lithium batteries and power banks are never permitted in checked baggage, regardless of capacity — a hard ICAO / FAA / EASA prohibition tied to a series of cargo-hold fires (UPS Flight 6 in 2010 being the canonical incident).

To convert the milliamp-hour label into Watt-hours:

Wh = (mAh × V) ÷ 1000

Use the cell voltage — usually 3.7 V for a lithium-ion pack — not the output voltage some manufacturers print on the casing (5 V or 9 V), which inflates the figure. The result tells you which of the three tiers your pack falls into. Enter your mAh at the power bank compliance checker to convert the label and see the verdict for your specific airline.

On top of the IATA baseline, individual airlines layer their own restrictions — in-flight-use bans, overhead-bin bans, visibility requirements, tighter unit caps. The power bank compliance checker converts your mAh figure AND applies your specific airline's overlay, with each policy cited to the carrier's own dangerous-goods page (table verified 6 June 2026).

Voltage adapters by region: 110 V vs 230 V

A plug adapter changes the shape of the connector. A voltage converter changes the electricity. Confusing the two destroys devices.

The world runs on two dominant mains voltages: roughly 100–120 V at 60 Hz (United States, Canada, Mexico, much of Central America, Japan at 100 V, Taiwan) and 220–240 V at 50 Hz (Europe, the UK, most of Asia, Africa, Australia, New Zealand). Plug type is a separate axis — six types dominate travel: A/B (US), C (Europlug), F (Schuko, continental Europe), G (UK/Ireland), I (Australia/China).

A device labelled "INPUT: 100–240 V, 50/60 Hz" is dual-voltage and only needs a shape adapter — true for virtually all modern laptop chargers, phone chargers, camera batteries, and electric toothbrushes. A device labelled "INPUT: 120 V, 60 Hz" is single-voltage; plugging it into a 230 V outlet through a passive adapter will fry it. Hair dryers, curling irons, and older shavers are the most common offenders.

Two tools split this decision: adapter.bordertriptools.com matches plug type + wattage for your destination and device, and voltage.bordertriptools.com answers the converter-or-adapter question per device label (country table verified 12 June 2026).

Cabin bag dimensions and weight: the IATA recommendation vs reality

IATA's published recommendation for cabin baggage — a reference, never a binding standard — is 55 × 40 × 20 cm and 8 kg, including handles and wheels. Almost no major airline enforces exactly this, and the deltas matter when you are at the gate with a non-collapsible bag: the same suitcase can fly free on one carrier, incur a fee on the next, and get gate-checked on a third. Low-cost carriers enforce strictly and charge premium gate rates.

Rather than memorising a table that changes per carrier and fare class, check your actual bag dimensions and weight against your actual airline at cabin.bordertriptools.com — it returns a per-airline pass/fail with overage fees. For checked baggage allowances and overweight fee schedules, use luggage.bordertriptools.com.

Checked baggage electronics restrictions

Checked-baggage rules for electronics are stricter than most travellers expect. The non-negotiables under current ICAO Technical Instructions and TSA/EASA security directives:

• Spare lithium batteries and power banks: forbidden in checked baggage, full stop, at any Wh rating.
• Devices containing lithium batteries (laptops, tablets, cameras, e-readers): permitted in checked baggage only if completely switched off (not sleep/hibernate), protected from accidental activation, and protected from damage.
• E-cigarettes and vapes: forbidden in checked baggage by TSA and most EASA-overseen carriers — cabin only.
• Smart luggage with non-removable batteries: refused by most airlines since 2018; removable-battery models require the battery in carry-on.
• Loose lithium cells (18650, 21700, AA lithium): carry-on only, terminals taped or in original packaging.

If a device is checked, the airline assumes it is off and inert. Any thermal event in the cargo hold is a category-one safety incident.

Frequently asked questions

Is a 30,000 mAh power bank allowed on a plane?

It depends which Wh tier the conversion lands in: under 100 Wh is fine with no approval, 100–160 Wh is carry-on only with written airline approval (max 2 units, and some airlines refuse this tier outright), and over 160 Wh is forbidden. Convert your exact mAh × cell voltage at powerbank.bordertriptools.com to see the verdict for your model and airline — and if the Wh figure isn't printed on the casing, expect security to do the math or refuse it.

Can I use my power bank during the flight?

Increasingly, no — even when carrying it is fine. A growing list of airlines (concentrated among Asian carriers since 2025) prohibits using or charging power banks in flight, and some require them kept visible or out of the overhead bin. These are airline-level overlays on the IATA baseline, so the answer depends on who you fly. The compliance checker flags in-flight-use bans per airline, each cited to the carrier's published policy.

Do I need a voltage converter for Europe or just a plug adapter?

Read your charger's brick. "INPUT: 100–240 V, 50/60 Hz" → passive plug adapter only (Type C/F for continental Europe, Type G for the UK and Ireland). "INPUT: 120 V" only → you need an active voltage converter rated above the device's wattage, or better, leave the device home — single-voltage hair tools are the classic casualty. Check device + destination at voltage.bordertriptools.com.

Can I put my laptop in checked baggage?

Allowed but discouraged: it must be fully shut down (not sleeping), protected from accidental activation, and padded against damage — and its spare battery, if any, must come out and travel in the cabin. Theft/damage risk plus the Montreal Convention's documentation burden (see what airlines owe you for baggage) makes the cabin the rational place for anything with a screen.

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Related tools and guides

• Power bank airline compliance — Wh conversion + your airline's own rules.
• Travel adapter + wattage matcher — plug type and wattage per destination.
• Voltage converter checker — converter or adapter, per device label.
• Cabin bag fit + fee checker — your bag vs your airline's sizer.
• Airline luggage restrictions — checked allowances and overweight fees.
• International travel requirements 2026 — the full pre-departure checklist.

Sources: IATA Dangerous Goods Regulations 67th edition (2026), ICAO Doc 9284 Technical Instructions 2025–2026 edition, TSA "What Can I Bring?" (tsa.gov), EASA Air Operations Regulation (EU) 965/2012, IEC 60083 plug standard.