British Airways Power Bank Rules 2026: Can I Take a Power Bank on British Airways?

• How many

  2 (within 4 spare batteries in total)

  Source: British Airways, checked 7 Nov 2026

• Maximum size

  100 Wh

  Source: British Airways, checked 7 Nov 2026

• Using it on board

  Seat power is for charging devices only; you cannot charge a power bank from it

  Source: British Airways, checked 7 Nov 2026

• Where to keep it

  In the seat pocket or in a bag under the seat in front

  Source: British Airways, checked 7 Nov 2026

What size power bank can I take on British Airways?

Up to 100 Wh.

Source: British Airways official page, checked 7 Nov 2026

Can I take a 20,000 mAh power bank on British Airways?

Yes. A typical 20,000 mAh power bank at 3.7 V is 74 Wh (20,000 × 3.7 ÷ 1,000). Check the Wh printed on yours.

Source: British Airways official page, checked 7 Nov 2026

Can I take a 30,000 mAh power bank on British Airways?

No. A typical 30,000 mAh power bank at 3.7 V is 111 Wh, which is over 100 Wh.

Source: British Airways official page, checked 7 Nov 2026

Can I put a power bank in checked baggage on British Airways?

No. Power banks are banned in checked bags on every airline, including bags checked at the gate. Take it out and carry it in the cabin.

Source: IATA guidance on the ICAO rule, checked 6 Nov 2026

How many Wh is my power bank?

Wh = mAh × volts ÷ 1,000. Most power banks use 3.7 V cells. The last column applies British Airways' rule.

Capacity	Watt-hours at 3.7 V	Allowed on British Airways?
10,000 mAh	37 Wh	Yes
20,000 mAh	74 Wh	Yes
26,800 mAh	99.2 Wh	Yes
30,000 mAh	111 Wh	No

Source: FAA PackSafe: lithium batteries, checked 6 Nov 2026

All British Airways carry-on rules

Power bank rules for every airline