Batteries on the Move: Transporting Lithium-Ion Batteries in Cars, Boats and Cabin Bags

Travel and transport

Battery safety advice almost always assumes the battery is sitting still: on a bench, in a charging bay, in a garage. Most of the batteries in your life do not sit still. They ride in the boot, rattle around a ute toolbox, get thrown in a cabin bag at 4am, and spend a weekend in the hull of a boat. Movement adds the two things a lithium-ion cell handles worst: impact and heat.

This is a practical guide to moving lithium-ion batteries around: in vehicles, on aircraft, on boats and caravans, and in the work bag you carry every day. The rules are different in each case, and in one of them the right answer is the opposite of what most people assume.

5.7Lithium-ion battery fires attended each week by Fire and Rescue NSWFRNSW
2Power banks per passenger under the international aviation rules that took effect in March 2026ICAO / CASA
0Spare batteries or power banks permitted in checked baggage, at any sizeCASA

Why a moving battery is a different risk

A cell that is stationary and undisturbed is in its safest state. Transport removes most of that:

  • Impact and vibration. A dropped tool pack, a laptop bag swung into a door frame, a battery sliding around a toolbox on a corrugated road. Internal damage from an impact often does not show on the outside and can develop into a short circuit hours or days later.
  • Heat. The cabin of a car parked in the Australian sun routinely exceeds 60 degrees C, and the metal tray of a ute is worse. Elevated temperature accelerates cell degradation and pushes a marginal battery closer to failure.
  • Short circuits. Loose cells in a toolbox with screws, drill bits, keys and coins is a classic ignition scenario. It only takes one conductive path across the terminals.
  • Crush loads. Batteries under gear, under a spare wheel, or wedged in a locker take pressure they were never designed to take.
  • Nobody is watching. A failure in a locked boot, a hull or a hold has time to develop before anyone notices, which is exactly why aviation regulators moved batteries into the cabin.

In the car, ute or van

Most people carry more lithium-ion in their vehicle than they realise: laptop, phone, power bank, camera, drone, two or three tool packs, a jump starter, sometimes an e-scooter battery.

  • Do not leave batteries in a parked vehicle in summer. Take them inside. This is the single highest-value habit on the list.
  • Never carry spare cells loose. Terminals get taped or capped, and each pack travels in its own compartment, sleeve or pouch.
  • Secure them. A battery that can slide, tumble or take a load in a heavy brake is a battery accumulating damage.
  • Keep them out of the cabin footwell and away from fuel, aerosols and gas bottles.
  • A damaged or swollen pack does not travel loose at all. It goes in a containment bag, and it goes straight to a drop-off point, not home for later.

Flying: the rules changed, and most people have not caught up

Aviation is the one area where lithium-ion transport is tightly regulated, and the rules moved twice in the last year. As of 2026:

Situation Current position
Spare batteries and power banks Carry-on only. They must never go in checked baggage, at any size.
Devices with the battery installed May be checked, but must be switched off and protected against accidental activation. The cabin is still safer.
How many power banks International rules effective 27 March 2026 limit passengers to two, and prohibit recharging the power bank itself in flight.
Using a power bank in flight Qantas, Jetstar and Virgin Australia went further from December 2025: no using and no charging a power bank at any point during the flight.
Capacity Under 100Wh is generally fine without approval. 100Wh to 160Wh needs airline approval before you fly. Above 160Wh is generally not accepted as passenger baggage.
Where it sits Within reach in the cabin, not buried in the overhead locker, so crew can act immediately if something goes wrong.
Damaged, swollen, recalled or unlabelled units Do not take them on board at all.
If your carry-on gets gate-checked Take the power bank out and keep it with you.

Where a containment pouch does and does not belong on a flight. In the cabin the rules exist so a battery stays visible and immediately accessible to trained crew. Sealing a power bank inside a fire-resistant pouch works against that, so do not use one as your in-flight stowage. Use it either side of the flight instead: getting to and from the airport, in the hire car, and in the hotel room where devices charge overnight in an unfamiliar space. Airline policies differ and change, so check your carrier and the CASA guidance before you fly.

Boats, caravans and anything you sleep in

This is the highest-consequence version of the problem and the least discussed. A fire on a vessel or in a van has three things working against it: a confined space full of combustible fit-out, no easy exit, and no fire brigade within reach. On the water, response times are measured in tens of minutes and the vessel next to you is at risk too.

  • Charge in the open, in daylight, while someone is awake. Not in a berth, not in a cabin locker, not overnight.
  • Keep batteries out of sleeping spaces. The gas is the immediate threat to a sleeping person, well before flame.
  • Store spares in a dedicated container away from fuel and gas.
  • Carry the means to respond. On a vessel or in a van, whatever you have on board is the entire response for the first critical minutes.
  • Brief whoever is aboard. Our online courses include one written specifically for boats, plus a general lithium battery awareness course for everyone else.

The work bag and the site

For tradespeople, contractors and anyone carrying a laptop for a living, the battery risk sits in the bag on the passenger seat. Tool packs going home in a ute for charging. A laptop that got dropped last month and now runs hot. A power bank picked up cheaply online, with no markings on it.

The practical control is a dedicated compartment rather than a shared one. The fire-resistant laptop and battery bag is 40 x 28cm and flat, so it fits a laptop up to about 15 or 16 inches, a tablet, power banks, camera and drone batteries, or the smaller tool packs. It is silicone-coated fibreglass, rated to 1100 degrees C instantaneous and 550 degrees C continuous, with a zip closure and a reinforced wrist strap so it can be grabbed and carried out. It slides into a work bag, a drawer, a glovebox or a locker, and it lies flat on a desk or bench while a device charges.

Fire-resistant, not fireproof

The pouch resists heat and flame, contains a thermal event and slows its spread, and reduces the chance of a single device failure taking a desk, a vehicle interior or a cabin with it. That is a real and useful control, and it buys the time to move clear and call 000.

It does not extinguish a battery in thermal runaway and it does not permanently contain one. It is sized for devices and compact packs, not for e-bike or e-scooter batteries. For those, use the larger 42 x 38 x 22cm containment bag, and for a whole bike, scooter or machine, a containment blanket over the equipment.

If a device starts venting while you are travelling

  • On an aircraft, alert cabin crew immediately. Do not try to handle it, do not put it in a bag, and do not move it into a locker or the toilet. Crew are trained and equipped for exactly this.
  • In a vehicle, pull over, get everyone out and move well clear, then call 000. A vehicle interior fills with toxic gas in seconds.
  • On a boat, get people away from the space, close it if you safely can, and raise the alarm. Do not open a locker that is already venting.
  • Anywhere else, evacuate, close the door and call 000. Do not inhale the smoke, and expect reignition even if it looks finished.

Equipment referenced in this article

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References

  1. AUCivil Aviation Safety Authority. (2026). Can I pack that? Dangerous goods. https://dangerousgoodsapp.casa.gov.au/
  2. AUFire and Rescue NSW. (n.d.). Battery and charging safety. https://www.fire.nsw.gov.au/fire-safety/home-fire-safety/battery-and-charging-safety
  3. AUNSW Government. (2025). Lithium-ion batteries: Shop, charge and recycle safely. https://www.nsw.gov.au/energy/shop-charge-and-recycle-lithium-ion-batteries-safely
  4. AUAustralian Competition and Consumer Commission. (2023). Lithium-ion batteries and consumer product safety. https://www.accc.gov.au/system/files/lithium-ion-batteries.pdf
  5. EULarsson, F., Andersson, P., Blomqvist, P., & Mellander, B. (2017). Toxic fluoride gas emissions from lithium-ion battery fires. Scientific Reports, 7, 10018. https://doi.org/10.1038/s41598-017-09784-z
  6. USFleischmann, C., Weinschenk, C., Madrzykowski, D., Schraiber, A., & Gaudet, B. (2025). Quantifying the fire hazard from Li-ion battery fires caused by thermal runaway in e-scooters. Fire Technology. https://doi.org/10.1007/s10694-025-01707-z

This article is general guidance only and does not replace a site-specific risk assessment, manufacturer instructions, or the current requirements of your airline, carrier or regulator. Aviation and dangerous goods rules change, so confirm the position with CASA and your operating airline before you travel. In any fire, call 000 first. Product specifications are current at the time of publication.

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