Can You Bring a Power Bank on a Plane? Wh Limits, mAh Math, and Packing Rules

Yes — you can bring a power bank on a plane, but only in your carry-on bag. Never put one in checked luggage, and stay inside the watt-hour (Wh) limits set by IATA and national regulators. This guide turns those rules into a quick calculation you can do at the gate.

The three Wh limits

• Up to 100 Wh: fly freely, no approval needed.
• 100–160 Wh: allowed only with airline approval, maximum two units.
• Over 160 Wh: banned outright.

Do the mAh math — Wh is what matters

Airlines read Wh, not mAh. Use this formula, based on the 3.7 V nominal voltage of the lithium-ion cells inside most power banks:

Wh = mAh × Volts ÷ 1,000

Here are the common sizes at 3.7 V:

• 10,000 mAh = 37.0 Wh — free
• 20,000 mAh = 74.0 Wh — free
• 25,000 mAh = 92.5 Wh — free
• 27,000 mAh = 99.9 Wh — free, right at the limit
• 30,000 mAh = 111.0 Wh — needs approval
• 40,000 mAh = 148.0 Wh — needs approval
• 50,000 mAh = 185.0 Wh — banned

The practical cutoffs are 27,027 mAh for 100 Wh and 43,243 mAh for 160 Wh. Do this ten-second check before you pack — it is the number airport staff actually read. See the full calculation in the original Indonesian article, Bolehkah Bawa Powerbank di Pesawat?.

Why the rule is so strict

Lithium-ion batteries can enter thermal runaway: a chain reaction of heat that can end in fire. In the cabin, crew can see it and act fast. In the cargo hold, nobody can. That is the whole logic behind the carry-on-only rule.

Indonesian airlines: small differences matter

Indonesian carriers follow the same framework under Directorate General of Civil Aviation Circular No. 02/2023. Garuda Indonesia is the strictest: maximum 100 Wh and two units, and 101–160 Wh is not allowed at all. Lion Air allows up to 100 Wh freely and 101–160 Wh with approval, but the power bank must stay in your pocket or under the seat in front of you — never in the overhead bin. Indonesia AirAsia caps at 100 Wh and two units, with the same seat-pocket or under-seat storage. Citilink, Batik Air, and Pelita Air follow the same 100 Wh, cabin-only pattern.

All of them ban using a power bank to charge devices during the flight, and require the capacity to be printed clearly on the power bank. If the label has worn off, staff can refuse it.

Packing checklist

1. Keep it in your carry-on or small personal bag — never in checked luggage.
2. Store it where you can reach it: the seat pocket or under the seat.
3. Protect the ports from keys and coins, and disconnect all cables.
4. Bring at most two units.
5. Check for cracks or swelling. A swollen power bank must never fly.
6. Charge it before boarding — you cannot recharge it from the plane.

How much do you actually need?

For a typical 2–3 hour domestic flight, 10,000 mAh is already more than enough. At 85% transfer efficiency, it gives about 2.6 full charges of a 12 Wh phone battery; a 20,000 mAh unit gives about 5.2.

If you fly often, buy in the 10,000–20,000 mAh range: safely under 100 Wh, light to carry, and enough for several full phone charges. For the per-airline table and the full breakdown, see the original article: https://www.miftahulrizki.eu.org/2026/11/bolehkah-bawa-powerbank-di-pesawat.html