Recommendation: Place phones, laptops, tablets, cameras, e-cigarettes and power banks in your carry-on/cabin baggage. Spare lithium batteries must travel in the cabin; they are not permitted in checked baggage. Devices with batteries installed can be carried in checked bags on some airlines, but placing them in the cabin reduces the risk of thermal incidents and prevents confiscation at security checkpoints.
Regulations to follow: lithium‑ion rechargeable cells up to 100 Wh are allowed in cabin without approval; batteries between 100–160 Wh require airline approval and are typically limited to two spares per passenger; batteries above 160 Wh are prohibited on passenger aircraft. Non‑rechargeable lithium metal batteries are generally limited to 2 g of lithium metal per cell for carriage in the cabin without special arrangements. Power banks are classified as spare batteries and must be carried in the cabin with clear Wh labeling.
Practical checklist: calculate Wh using Wh = (mAh ÷ 1000) × V (example: a 10,000 mAh power bank at 3.7 V ≈ 37 Wh); tape or insulate battery terminals or use original packaging; keep devices powered off and prevent accidental activation; declare batteries >100 Wh at check‑in and obtain written airline approval if required; consult your airline and local aviation authority (TSA/EASA/IATA guidance) before travel for route‑specific restrictions.
Electronic devices in cabin baggage: clear rules
Keep phones, laptops, tablets, cameras and portable chargers in cabin baggage; spare lithium batteries and power banks are forbidden in checked baggage. Watt‑hour limits: ≤100 Wh allowed without airline approval; 100–160 Wh allowed only with airline approval (usually max two spares); >160 Wh banned on passenger aircraft. Lithium metal batteries with >2 g lithium content require airline approval.
Screening and operation
- Security may request devices to be powered on during screening; keep at least one device charged.
- Remove laptops and large tablets from carry containers at checkpoints unless directed otherwise by the airport signage.
- Portable chargers count as spare batteries; present them separately for X‑ray when requested.
Packing checklist
- Place gadgets in an easily accessible padded compartment to speed up inspection.
- Protect spare batteries and power bank terminals from short circuits with original packaging, insulating tape or plastic sleeves.
- Label or note watt‑hour capacity if available; convert mAh to Wh using Wh = (mAh / 1000) × V (example: 20,000 mAh at 3.7 V ≈ 74 Wh).
- Keep cords and adapters coiled; place sharp accessories (e.g., mini tripods with pointed ends) in checked or secured carry containers depending on airline policy – see are digital camera tripods universal for guidance on tripod sizes and compatibility.
- Store e‑cigarettes and similar battery‑powered smoking devices in cabin baggage; they cannot be used on board.
Which small devices (phones, laptops, cameras) must travel in carry-on?
Keep smartphones, tablets, laptops, cameras, memory cards, external drives, power banks and spare lithium batteries with you in your carry-on – spare cells and portable chargers are prohibited from checked baggage under international rules.
Battery capacity limits and approvals
Spare lithium-ion batteries: under 100 Wh – allowed in carry-on without airline approval; 100–160 Wh – allowed only with airline approval and normally limited to two spare batteries per passenger; over 160 Wh – generally forbidden on passenger aircraft. Installed batteries inside a device are usually permitted in checked baggage, but spare batteries must remain in the cabin.
Convert mAh to Wh as follows: Wh = (mAh × V) / 1000. Example: a 10,000 mAh phone bank at 3.7 V ≈ 37 Wh; a 20,000 mAh unit ≈ 74 Wh.
Packing and security handling guidance
Place laptops and tablets in an easily accessible compartment or outer pocket for potential removal at security unless the checkpoint uses a binless screening system that allows electronics to stay in the bag. Keep phones and cameras charged; security may ask you to power them on to prove functionality.
Protect spare batteries by covering terminals (original packaging, individual plastic sleeves, or tape) and stow power banks in carry-on only. Camera film and high-ISO unprocessed film should travel in the cabin; request a hand inspection where available to avoid X-ray damage, or accept screened exposure if hand check is denied.
For medical devices or equipment with high-capacity batteries, notify the carrier before travel and carry documentation specifying battery Wh. Check the specific carrier and departure/arrival country rules for drones, e-cigarettes and oversized battery packs – some operators apply stricter limits than international guidelines.
Keep lithium-ion batteries and power banks in your carry-on; spares are not permitted in checked baggage and batteries above 160 Wh are banned from passenger cabins.
Most carriers follow IATA/ICAO rules: devices with installed rechargeable lithium batteries may travel in checked or carry-on baggage, but spare batteries and power banks must be transported in the cabin only, with terminals protected (tape or original packaging) and each battery individually isolated.
Watt‑hour limits, approvals and common examples
Category | Watt‑hours (Wh) | Cabin (carry‑on) | Checked baggage | Airline approval | Typical mAh at 3.7V (approx.) |
---|---|---|---|---|---|
Small cells/batteries | ≤100 Wh | Allowed (no approval) | Devices OK; spare batteries NOT allowed | No | 10,000 mAh ≈ 37 Wh; 20,000 mAh ≈ 74 Wh |
Medium batteries | >100 Wh and ≤160 Wh | Allowed with airline approval for spares (usually limited to 2) | Generally prohibited for spares; devices may be restricted | Yes (carrier permission required) | 26,800 mAh ≈ 99 Wh; 43,200 mAh ≈ 160 Wh |
Large batteries | >160 Wh | Prohibited on passenger aircraft (unless shipped as cargo under special provisions) | Prohibited | N/A (not permitted) | Example: 50,000 mAh ≈ 185 Wh |
How to calculate and practical points
Calculate Wh: (mAh ÷ 1000) × nominal voltage (usually 3.7V for Li‑ion). Check the label – if only mAh is shown, convert to Wh before travel. If the label is missing, treat the power bank as a spare and contact the airline.
Before flying: verify the battery’s Wh, tape or cover exposed terminals, keep spares in carry‑on, declare batteries >100 Wh to the carrier and obtain written approval if needed, limit quantity per airline rules (common limit: two batteries between 100–160 Wh). Do not place spare power banks in checked baggage; do not attempt to bypass limits by disassembling or packing batteries inside checked gear.
How to pack spare batteries and power banks to pass security screening
Always carry spare lithium batteries and power banks in carry-on/cabin baggage; do not place them in checked baggage.
- Confirm watt-hour rating: look for Wh on the label. If only mAh and voltage are shown, calculate Wh = (mAh ÷ 1000) × V. Example: 10,000 mAh at 3.7 V → 37 Wh.
- Know the limits: batteries ≤100 Wh are generally allowed in cabin without approval; batteries >100 Wh and ≤160 Wh require airline approval and are usually limited to two spares per passenger; batteries >160 Wh are not permitted on passenger aircraft.
- Power banks = spare lithium-ion batteries: they count toward the passenger spare-battery allowance and are typically forbidden in checked baggage–keep them in the cabin.
- Protect terminals: keep each cell or pack in original retail packaging or use individual plastic sleeves/insulating pouches; cover exposed terminals with non-conductive tape or use a purpose-made case to prevent short circuits.
- Separate and accessible packing: place spares in an outer compartment or a quick-access pocket so security can inspect them without emptying the entire bag; use a clear plastic pouch to organize multiple units.
- Limit quantities sensibly: while many carriers accept multiple batteries under 100 Wh, check the airline’s allowance; for 100–160 Wh expect a firm limit of two spares and require prior approval.
- Do not fly with damaged batteries: swollen, cracked, leaking or heat-discolored packs are prohibited–dispose of them safely before travel.
- Screening behaviour: be prepared to remove power banks and spare cells for separate X-ray or hand inspection; having Wh labels visible speeds the process–if unlabeled, be ready to show your Wh calculation.
- When unsure: contact the airline or check the airport/security website for that airport’s specific rules before packing.
Choose a carry bag with an external pocket for quick access during screening – see best luggage for carry on or checking for suitable options.
Are e-cigarettes, vaporizers and fuel-based devices allowed in carry-on?
Pack all vaping devices and e-cigarettes in your carry-on only; do not place them in the checked hold. Devices with lithium cells present a fire risk if crushed or exposed to heat in the hold. Keep tanks capped, tanks drained if required by the carrier, and protect devices against accidental activation.
Vaping devices – practical rules
Installed batteries may remain in the device; spare lithium batteries and power banks must travel in the cabin as spare cells. E-liquid bottles follow standard cabin liquid limits (maximum 100 ml / 3.4 fl oz per container, all containers fitting in a single 1‑litre resealable bag). Charging or using vapes onboard is prohibited by almost all operators; visible use will result in confiscation and possible fines. Label or seal tanks to show they are nicotine liquid, if requested by security.
Fuel-based devices and lighters
Butane/propane cartridges, fuel canisters and spare fuel bottles are forbidden in both cabin and checked hold. Torch/jet lighters and piezo/arc lighters are widely banned from both cabin and checked compartments. Small disposable lighters are often permitted only on the person (not stored in the checked hold) and limits vary by carrier and country. Refillable lighters containing liquid fuel should be emptied and free of residue before transport; even then many airlines restrict them to the cabin or prohibit them entirely. When in doubt, leave fuel and cartridges at home.
Can heating tools (hair straighteners, curling irons) and electric shavers be carried in carry-on?
Yes – corded flat irons, curling tongs and electric razors are permitted in carry-on; cordless models containing lithium cells must travel in cabin baggage and comply with watt‑hour limits: ≤100 Wh allowed without airline approval, 100–160 Wh allowed only with carrier approval, and >160 Wh prohibited from passenger transport.
Pack recommendations: power devices must be switched off and fully cooled, heating plates clipped together or covered, blades and foils protected. Remove removable batteries when possible and place them in your carry-on with terminals taped or in their original packaging. Spare lithium batteries and external power banks belong in the cabin and must be individually protected against short circuits.
Fuel-powered styling tools (butane torches, refillable gas cartridges) are not acceptable in either checked or cabin baggage; dispose of or ship fuel separately. Corded-only models can go in checked bags but storing battery‑containing tools in the cabin reduces fire-related risk and speeds security checks. Always verify the carrier’s policy before travel and allow devices to be accessible for screening.
For transit protection use a rigid case or compartmentalized pack – a tactical-style option is practical for organized storage: best backpack for military.
How to prepare and declare electronic devices at check-in and customs
Immediate rule: keep all portable devices and spare batteries accessible in your carry-on and present any high-capacity units or multiples to the check-in agent before tagging a suitcase.
Prepare a one-page inventory: brand/model, serial numbers, battery label (capacity and voltage), and proof of purchase or commercial invoice for each unit you intend to travel with. Print or have PDFs available on your phone; frontline staff and customs officers will request them.
At check-in, state plainly: “I have batteries and power banks to declare.” Hand the inventory and any airline approval emails up front. If an approval was required and granted, present the approval reference or screenshot without delay.
Pack spares to prevent short circuits: cover terminals with non-conductive tape or use individual plastic sleeves, and place each cell or pack in a separate pouch. Keep devices powered off and accessible for inspection; remove built-in modules only if requested by staff.
If a device is new, boxed or intended for sale, declare it at customs if the total value exceeds the local duty-free allowance or if you are carrying multiple units of the same model. Present invoices and be ready to complete the customs form for commercial goods.
For inspections: allow security to power on a device if asked; if the battery is sealed and cannot be powered, show the battery label and the inventory. If an item is refused at check-in, accept the airline’s instructions and either transfer the unit to cargo (with prior carrier arrangements) or remove it from the journey.
When shipping batteries or large-capacity packs via cargo rather than passenger service, obtain and present dangerous-goods documentation and the manufacturer’s safety data sheet (MSDS) at check-in for the freight desk; customs will require this paperwork on export/import of regulated cells.
Quick checklist: inventory + receipts, battery labels visible, non-conductive terminal protection, approvals printed/saved, declare new/commercial goods at customs, and contact the airline/cargo agent in advance for anything beyond routine personal use.