Can I Bring a 20000mAh Power Bank on ANA Flights?
Updated 2026-07-27 · Power Bank Guide
Traveling with a high‑capacity charger is a smart move, but many flyers wonder whether a 20000 mAh power bank complies with the ANA airlines power bank policy. The good news: a 20 Ah pack is typically under the FAA’s 100 Wh carry‑on limit, making it flight‑safe for most ANA routes. Below we break down the numbers, explain how the policy is applied, and give you real‑world guidance for keeping devices alive on camping trips, festivals, and other off‑grid outings.
Understanding the FAA and ANA Power‑Bank Limits
The Federal Aviation Administration (FAA) caps lithium‑ion batteries at 100 Wh for carry‑on baggage. To convert a battery’s capacity to watt‑hours, use the formula:
- Wh = (mAh ÷ 1000) × voltage
Most power banks use a 3.7 V nominal cell voltage. For a 20000 mAh unit, the calculation is:
(20 000 ÷ 1 000) × 3.7 V = 74 Wh
At 74 Wh, the pack is comfortably below the 100 Wh ceiling, so ANA (and other carriers) will generally allow it in your carry‑on. If a bank exceeds 100 Wh, you must seek airline approval and it may be limited to checked baggage only.
What the ANA Airlines Power Bank Policy Means for You
ANA follows the same FAA guideline: any lithium‑ion battery under 100 Wh can be carried in the cabin without special permission. The airline also expects you to:
- Keep the power bank in your personal item or carry‑on, not checked luggage.
- Ensure the device is turned off or in a protected state (e.g., stored in a protective case).
- Present the battery at security if asked; TSA agents will typically see the capacity printed on the unit.
Because the policy is straightforward, most travelers face no issues once the pack is under the limit.
Real‑World Charge Estimates for Common Devices
Power banks are not 100 % efficient. Internal circuitry, voltage conversion, and cable losses bring real‑world efficiency to about 60‑70 %.
Using a 70 % efficiency figure, a 74 Wh pack delivers roughly 52 Wh of usable energy. Below are typical charge counts for popular smartphones (assuming a 3.8 V battery voltage):
- iPhone 17 (≈3 200 mAh, 12 Wh): ~4 full charges.
- Samsung Galaxy S24 (≈4 000 mAh, 15 Wh): ~3 full charges.
- Google Pixel 8 (≈4 500 mAh, 17 Wh): ~3 full charges.
- Xiaomi Mi 13 (≈5 200 mAh, 20 Wh): ~2–3 charges.
For tablets, laptops, or other gear, expect roughly half the number of charges compared to a phone of similar capacity.
Why the INIU 20000 mAh Portable Charger (Flight‑Safe) Is a Good Choice
If you need a reliable, airline‑approved pack, the INIU 20000 mAh Portable Charger (Flight‑Safe) checks all the boxes. It delivers 22.5 W via USB‑C Power Delivery, fast‑charging most modern smartphones in under an hour. The included USB‑C cable, pocket‑size form factor, and built‑in flashlight make it a versatile companion for both air travel and off‑grid adventures.
Because it sits at 74 Wh, it meets the ANA airlines power bank policy without any paperwork. Its compact design also fits easily in a backpack for camping, hiking, or festival use.
Off‑Grid Power Strategies: Camping, Hiking, Festivals, and Van Life
When you’re away from outlets, a 20 000 mAh bank can be the difference between a dead phone and a fully functional GPS. Here are practical tips to stretch that capacity:
- Prioritize devices. Charge your phone first, then switch to a Bluetooth headset or handheld GPS.
- Use low‑power modes. Dim screens, disable background sync, and turn on airplane mode when you only need GPS.
- Leverage solar panels. Pair the power bank with a 10‑15 W foldable solar panel; the INIU’s 22.5 W input can accept solar input up to 15 W, topping up the pack during daylight.
- Charge in batches. Connect multiple devices sequentially rather than simultaneously to avoid over‑draw and maximize efficiency.
- Keep the pack cool. Heat reduces battery performance; store it in a shaded spot when charging.
For van‑life setups, the INIU can serve as a backup for a small inverter, providing enough juice for a 60 W USB‑C monitor or a short‑duration LED light strip.
What to Do If Your Power Bank Exceeds the 100 Wh Limit
Should you ever need a larger capacity (e.g., 30 000 mAh ≈ 111 Wh), the pack must be checked in, and many airlines—including ANA—require prior approval. In such cases:
- Contact ANA customer service before your flight.
- Prepare documentation that shows the battery’s capacity and safety certifications.
- Pack the battery in a fire‑resistant sleeve and ensure it is insulated from metal objects.
Because rules can change, always verify the most current policy with the airline before traveling.
FAQ
Can I bring multiple 20000 mAh power banks on an ANA flight?
Yes, as long as each individual pack stays under 100 Wh and the total does not exceed the airline’s overall luggage weight limits. However, security may ask to see each battery, so keep them easily accessible.
Will the INIU power bank charge a laptop?
The INIU provides 22.5 W via USB‑C PD, which can charge many ultrabooks and 2‑in‑1 laptops that accept 20 W or lower. For higher‑wattage laptops (30 W+), charging will be slower or may not start.
Is a solar panel necessary for a 20000 mAh pack on a weekend camping trip?
Not mandatory, but a 10‑15 W solar panel can replenish the pack during sunny days, extending its usefulness for multi‑day trips without a generator.