Yes—usually. A 25,000mAh power bank is about 92.5Wh when its marked nominal cell voltage is 3.7V, which is below the Federal Aviation Administration’s 100Wh baseline for lithium-ion batteries. The mAh number alone is not enough, however. Read the power bank’s printed watt-hour rating, carry it in the cabin rather than checked baggage, protect it from damage and short circuits, and verify the operating airline’s current limits before you travel.
What a 25,000mAh rating means on a flight
Airline battery rules are expressed primarily in watt-hours (Wh), not milliamp-hours (mAh). Milliamp-hours describe electrical charge; watt-hours combine charge with voltage and therefore indicate the battery’s energy more usefully for transport rules.
As an Amazon Associate I earn from qualifying purchases.
The standard conversion is:
Wh = volts × amp-hours
Convert 25,000mAh to amp-hours by dividing by 1,000:
25,000mAh ÷ 1,000 = 25Ah
Using a 3.7V nominal cell voltage:
25Ah × 3.7V = 92.5Wh
That 92.5Wh result is a calculation based on the stated voltage, not a universal value for every product sold as 25,000mAh. A manufacturer may print a different nominal voltage or a direct Wh figure on the case. If the label says 90Wh, 96Wh, or another value, use the marked value when checking eligibility.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Read the power bank’s Wh marking before packing
Look for “Wh” on the battery case, rating label, original packaging, or accompanying documentation. The International Air Transport Association (IATA) says the watt-hour rating should be marked on the battery case. An operator may refuse carriage if airport staff cannot verify the rating from the battery or documentation.
- Best evidence: a clearly printed Wh value on the power bank itself.
- Second-best evidence: manufacturer documentation showing the rated voltage and capacity.
- Calculation: use the bank’s actual marked nominal voltage, convert mAh to Ah, and retain the product documentation in case staff need to verify it.
Do not calculate with the USB output voltage. A power bank’s ports may provide 5V, 9V, 12V, or another output level, while the cells inside commonly have a different nominal voltage. For transport calculations, use the cell voltage specified for the battery’s rating, not the voltage currently delivered to your phone.
How the main rules treat a 25,000mAh bank
In the United States, the FAA treats power banks as spare lithium batteries. Its passenger guidance sets a 100Wh baseline for lithium-ion batteries. Spare batteries, including power banks and portable chargers, must be carried on and cannot be checked. The FAA also explains that airlines may impose stricter watt-hour or quantity limits.
IATA’s passenger guidance is based on the 2025–2026 ICAO Technical Instructions and the 67th edition (2026) of the IATA Dangerous Goods Regulations. Its operator guidance dated 31 March 2026 uses a more specific table for power banks:
| Power-bank rating | IATA operator table for 2026 | FAA passenger guidance | What you should do |
|---|---|---|---|
| At or below 100Wh | Maximum of two power banks per passenger | Generally permitted as spare lithium-ion batteries, subject to airline limits | Carry in the cabin and confirm the operating carrier’s quantity rule |
| Greater than 100Wh through 160Wh | Marked “Forbidden” for power banks in the operator table | Up to two spare lithium-ion batteries may be allowed with airline approval | Do not assume the FAA approval exception applies; ask the operating airline specifically about power banks |
| Above 160Wh | Not eligible under the stated passenger framework | Not permitted as ordinary passenger spare batteries | Do not bring it as passenger baggage |
The apparent difference matters. The FAA’s 101–160Wh approval language is a general statement about spare lithium-ion batteries, while IATA’s 2026 operator table separately forbids power banks in that range. Because an airline can apply a stricter rule, a traveler should never rely on the approval exception without written confirmation from the carrier operating the flight.
IATA says its 2026 operator guidance is not effective beyond 31 December 2026. Rules can change after that date, so check again for travel occurring in 2027 or later.
Can I take a 25,000mAh power bank on a plane?
Usually, yes, if the unit’s marked Wh rating is at or below the applicable limit, it is undamaged, and it is packed in your carry-on. A 25,000mAh label commonly works out to about 92.5Wh at 3.7V, putting it below 100Wh. That calculation does not guarantee acceptance: the printed Wh value, the carrier’s quantity policy, and the route’s current rules control.
Do not confuse “under 100Wh” with “allowed anywhere.” The bank still has to travel in the cabin, be protected against accidental short circuit, and remain available for inspection. A ticketing airline’s general battery page may not be the final word when another airline operates one leg of the trip.
Pack the power bank safely in your carry-on
Use this packing procedure before leaving for the airport:
- Inspect the label. Confirm the Wh value, model information, and that the case is legible. If there is no reliable rating, bring the manufacturer’s documentation or choose a different bank whose rating can be verified.
- Check its condition. Do not pack a bank that is swollen, cracked, leaking, dented, unusually hot, or otherwise damaged. Do not travel with a recalled battery that could spark or overheat.
- Turn it off if the design allows. Disconnect cables and prevent buttons from being pressed accidentally inside your bag.
- Prevent contact with metal objects. Keep the bank away from loose coins, keys, tools, and exposed wires. Insulate exposed terminals or place the unit in a protective pouch, its original packaging, or another individual covering.
- Place it in cabin baggage. Keep it in the bag you will take into the aircraft, where it can be accessed and monitored. Do not put it in checked baggage.
- Keep documentation available. A photo of the rating label and the manufacturer’s specification page can help staff verify an otherwise unclear marking, although the airline retains discretion over carriage.
A protective pouch is a practical safety accessory, not a compliance workaround. It can reduce accidental short circuits and abrasion, but it cannot make an oversized or prohibited power bank acceptable.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Check every airline and connection on your itinerary
The “operating airline” is the carrier actually flying each segment, not necessarily the company that sold the ticket. Review the battery and dangerous-goods page for every operating carrier, including a regional partner on a connecting flight.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errors- Confirm the maximum Wh rating for a power bank.
- Confirm the maximum number allowed per passenger. IATA’s 2026 operator table lists two at or below 100Wh, but an airline may allow fewer.
- Check whether the airline requires advance approval, declaration at check-in, or a particular packaging method.
- Check whether a carrier bans power-bank use or charging during flight, even if another carrier on the itinerary states a different policy.
- Save the current policy on your phone and check it again shortly before departure, because airline rules can be stricter than the FAA baseline.
For a 25,000mAh bank calculated at 92.5Wh, the capacity normally falls below the FAA’s 100Wh baseline. That does not override a carrier’s own quantity, packaging, or onboard-use restrictions.
What to do if your carry-on is gate-checked
Aircraft loading limits sometimes require an airline to place a cabin bag in the hold at the gate. Before handing over the bag, remove the power bank and keep it with you in the cabin. A power bank left inside a gate-checked bag is being transported as checked baggage, which is not allowed under the FAA’s spare-battery guidance.
Keep the bank in a small personal item or hand it to the gate agent according to the carrier’s instructions. Do not assume that a bag tagged at the gate remains subject to cabin-baggage treatment once it enters the aircraft hold.
Restrictions while you are onboard
IATA’s 2026 operator guidance says power banks must not be recharged onboard. It also says they should not be used to recharge a portable electronic device onboard. That means you should not connect the bank to a wall-style USB outlet, seat power socket, or another charger during the flight, and you should avoid using it as a source for your phone or laptop while airborne.
Free tools Windows power users keep installed
One-click scans. No signup required.
Keep the power bank individually protected when it is not in use and follow the crew’s instructions. An airline may impose an even stricter prohibition, so the cabin crew’s direction takes precedence over assumptions based on a different route or carrier.
What to do if the power bank becomes hot or damaged
Lithium-ion cells can release heat rapidly when damaged or short-circuited. If you notice swelling, smoke, sparks, a chemical smell, or unusual heat:
- Stop handling or charging the bank.
- Move away from it if doing so is safe; do not place it under a seat, in an overhead bin, or inside another bag.
- Tell a flight attendant or airport employee immediately and describe the symptoms clearly.
- Follow crew instructions for isolation and disposal. Do not attempt to open, puncture, cool, or repair the battery yourself.
If damage is discovered before departure, do not put the unit in your luggage. Ask the airline or airport staff how to dispose of or surrender it safely.
Capacity examples: why the label matters
Two banks can both be advertised as 25,000mAh yet carry different Wh markings if the manufacturer uses different nominal cell specifications or labeling conventions. A unit marked 92.5Wh is straightforward to compare with a 100Wh rule. A unit marked 100Wh is exactly at the stated threshold, while one marked 101Wh enters a different regulatory category. Do not round a value down to make it fit.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →If the case shows only mAh, calculate using the marked nominal voltage and keep the product specification available. For example, 25Ah multiplied by 3.7V gives 92.5Wh; multiplying by a USB output voltage would answer a different electrical question and could produce a misleading transport figure. When the calculation and printed Wh number differ, ask the carrier which value it will accept rather than choosing the more favorable number.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Airport screening and documentation
Pack the bank so that you can remove it without unpacking your entire bag. Staff may need to read the Wh marking or compare it with documentation. A clear photograph of the label, the manufacturer’s specification page, and the original packaging can help establish the rating, but documentation does not override an airline’s authority to refuse a questionable or prohibited item.
A missing, rubbed-off, or contradictory label is a practical reason to leave the bank at home and take a clearly marked replacement. Do not rely on a handwritten capacity note or on an online listing that does not identify the exact model. The relevant rating is the one tied to the battery you are carrying.
International routes and changing dates
For an international itinerary, compare the rules of every operating carrier and the requirements applicable at the departure, connection, and arrival airports. IATA’s passenger material for 2026 is based on the 2025–2026 ICAO Technical Instructions and the 67th edition of its Dangerous Goods Regulations. The operator document dated 31 March 2026 states that its guidance is not effective beyond 31 December 2026, so a rule saved for a 2026 trip should not be treated as permanent.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →The safest approach for travel after that date is to retrieve the carrier’s current battery policy again, especially if your itinerary includes a codeshare or a regional connection. Use the strictest requirement when policies differ, and ask the operating carrier for written clarification if a 101–160Wh exception appears relevant.
Common mistakes and how to correct them
Using mAh without checking voltage
Mistake: treating 25,000mAh as if it were automatically 25Wh or automatically 100Wh.
Correction: convert mAh to Ah and multiply by the marked nominal voltage, then compare the result with the printed Wh value. The 92.5Wh figure applies only to the 3.7V assumption.
Putting the bank in checked baggage
Mistake: packing it in a suitcase because the suitcase is more convenient.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Correction: place the bank in cabin baggage from the start. If that bag is taken at the gate, remove the bank before it goes into the hold.
Assuming a protective case changes the capacity rule
Mistake: believing a pouch makes a bank over the airline’s Wh limit acceptable.
Correction: use protection to prevent damage and short circuits only. Eligibility still depends on the bank’s rating and the carrier’s rules.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Relying on a different airline’s policy
Mistake: applying a rule found for the ticketing airline to a flight operated by another carrier.
Recommended Free Tools
Correction: check each operating airline and use the strictest applicable requirement for the itinerary.
Assuming the FAA exception covers every power bank
Mistake: reading the FAA’s allowance for certain 101–160Wh spare batteries as automatic permission for a 101–160Wh power bank.
Correction: ask the carrier directly. IATA’s 2026 operator table marks power banks above 100Wh through 160Wh as forbidden, and airlines may set stricter limits.
Leaving it in a bag that is checked at the gate
Mistake: assuming the original cabin-bag plan still applies after an agent sends the bag to the hold.
Correction: remove the power bank before surrendering the bag and keep it in the cabin with you.
Charging or using it automatically after takeoff
Mistake: treating a seat USB port or a low phone battery as permission to connect the bank.
Correction: IATA’s 2026 operator guidance says not to recharge a power bank onboard and advises against using it to recharge another portable device. Follow the crew’s instruction if it is stricter.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical departure-day checklist
- Is the Wh rating printed clearly or supported by documentation?
- Did you calculate the value with the bank’s marked nominal voltage rather than its USB output voltage?
- Is the bank at or below the operating airline’s permitted Wh limit?
- Are you within the airline’s quantity limit?
- Is the bank undamaged, not recalled, and free of swelling or leakage?
- Are terminals protected from keys, coins, cables, and other conductive objects?
- Is it packed in cabin baggage rather than checked baggage?
- If your cabin bag is gate-checked, will you remove the bank first?
- Have you checked every operating carrier, including connections?
- Will you leave the bank unused and uncharged during the flight unless the crew gives a specific instruction otherwise?
Why travelers should verify instead of guessing
IATA passenger information reports that 83% of surveyed travelers carry a phone, 60% bring a laptop, and 44% travel with a power bank. The same page reports substantial confusion: half of respondents incorrectly believe small lithium-powered devices can go in checked baggage, 45% think power banks can be placed in the hold, and 33% are unsure about limits for larger batteries or spare power banks. The page does not state the survey year, so these figures should be read as an indication of widespread uncertainty rather than a dated forecast.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The safest approach is therefore procedural: verify the Wh marking, use cabin baggage, protect the terminals, remove the bank from any gate-checked bag, and apply the operating airline’s current rule. For a clearly marked 25,000mAh bank rated around 92.5Wh at 3.7V, that process normally leads to cabin carriage, subject to the carrier’s final decision.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Frequently Asked Questions
Can I take a 25,000mAh power bank on a plane?
Usually. At a 3.7V nominal cell voltage, 25,000mAh equals about 92.5Wh, below the FAA’s 100Wh baseline. Check the bank’s printed Wh rating and the operating airline’s current policy before departure.
Does 25,000mAh automatically mean 92.5Wh?
No. The 92.5Wh figure assumes 3.7V. Use the manufacturer’s marked Wh value or calculate with the marked nominal voltage; do not use the USB output voltage.
Can a 25,000mAh power bank go in checked luggage?
No. Power banks are treated as spare lithium batteries and must travel in carry-on baggage. If the bag is gate-checked, remove the power bank first.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHow many power banks can I bring?
IATA’s 2026 operator table lists a maximum of two power banks at or below 100Wh, but an individual airline may allow fewer. Confirm the limit for every operating carrier.
Can I bring a power bank rated between 101Wh and 160Wh?
Do not assume so. The FAA describes an airline-approval exception for some spare lithium-ion batteries, while IATA’s 2026 operator table marks power banks above 100Wh through 160Wh as forbidden. Ask the operating airline specifically.
Can I charge my power bank during the flight?
IATA’s 2026 operator guidance says power banks must not be recharged onboard and should not be used to recharge another portable electronic device. Follow any stricter crew instruction.
What if the Wh rating is missing or unreadable?
Bring manufacturer documentation that clearly identifies the exact model and rating, but understand that staff may refuse carriage if they cannot verify the Wh value. A clearly labeled replacement is safer.
What should I do if the bank gets hot, swells, or smokes?
Stop handling it and notify a flight attendant or airport employee immediately. Do not open, puncture, repair, or put a damaged battery in another bag.
The Bottom Line
A clearly labeled 25,000mAh power bank is commonly about 92.5Wh at 3.7V and can usually fly in carry-on baggage. Verify the printed Wh rating, protect the terminals, remove it from any gate-checked bag, and follow the current rules of every operating airline. Do not charge or use the bank to charge another device onboard under IATA’s 2026 operator guidance.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
