Batteries and Power Banks: Cabin and Checked-Bag Packing

Sort batteries into three groups: installed in a device, spare batteries and power banks. The same packing rule does not apply to all three. A lithium battery being removable does not make it suitable for checked baggage.

Where each category belongs

Sources: FAA spare batteries and FAA portable electronic devices. Device-specific restrictions still apply; a rule about a tool's battery does not authorize the tool itself through security.

Check the battery category and capacity

For ordinary rechargeable lithium-ion batteries, IATA's passenger table, page 8 distinguishes up to 100 Wh from over 100 to 160 Wh. The larger installed/spare category requires operator approval, and its spare-battery quantity is restricted. It does not create a 500 Wh allowance for laptops or make all spare batteries subject to a two-unit limit.

Power banks have their own entry: the IATA passenger guide specifies no more than two, each up to 100 Wh. Its stricter guidance and the 2026 operator explanation must be read alongside the actual airline policy. See power-bank capacity and onboard-use rules before packing a larger unit. Do not recharge a power bank onboard.

Use the actual label

Read the manufacturer's Wh value. If you calculate it, use Ah × nominal battery voltage, not USB output voltage. A label of 10,000 mAh at 3.7 V gives 10 × 3.7 = 37 Wh. That calculation describes stored energy; it is not permission to carry the device.

A gate-check routine

1. Take power banks and spare lithium batteries out before handing over the bag.
2. Protect exposed contacts individually, for example with suitable covers or separate protective pouches.
3. Keep the model and Wh details available. For an approval request, give the airline the quantity and whether each battery is installed or spare.
4. Do not travel with a damaged, swollen or safety-recalled unit; follow the manufacturer's instructions. Report unusual heat or smoke to staff or crew immediately.

For medical equipment, mobility aids or rideable luggage, ask for the relevant device policy; this ordinary-electronics checklist does not establish their acceptance. The bag checker checks bag dimensions and weight, not battery or dangerous-goods approval.