Can I bring 20000 mAh 3.7 V power bank on CA from CN to US?

Banned. Not permitted on this flight.

TripCNUSCA

Verdictvdt_01KTBDCE3YBBPCJ8BSKSFP9JDB

Banned

74.0Wh

Not permitted on this flight.

Airline policy applied

Air China CA

Confidence

Official

Air China is covered by CertiWatt baseline lithium battery rules with active airline/regulator citations.

checked: 2026-05-16

Key constraints

Quantity: No airline-specific quantity limit is active in the current ruleset.
Watt-hour limit: Baseline model: up to 100 Wh normally allowed; over 160 Wh banned on passenger aircraft.
Carry-on: Allowed when the device stays within capacity, quantity, certification, and recall rules.
Checked baggage: Power banks and spare lithium batteries are not modeled as allowed in checked baggage.

Conditions

Issued2026-06-05 · ruleset 2026-05-15

RegulatorCAACCN
“Power banks without 3C marking, or with unclear 3C marking, are prohibited on flights departing from mainland China.”
caac.gov.cn2026-04-29
AirlineAir China
“Power banks must bear 3C certification marking.”
airchina.com.cn2026-05-04
RegulatorIATA passenger guidance
“Power bank: ≤100 Wh carry-on permitted; >100 Wh but ≤160 Wh forbidden; >160 Wh must be carried as cargo.”
iata.org2026-05-15

Informational only. Final decision rests with airline and security staff. Why we said this.

This trip touches mainland China, so the verdict may depend on 3C evidence, recall status, and China-specific airport screening in addition to Wh.

Engine details (verdict id, ruleset version, rule path)

verdict_id: vdt_01KTBDCE3YBBPCJ8BSKSFP9JDB

ruleset_version: 2026-05-15

generated_at: 2026-06-05T08:11:22.110Z

rule path: