TSA Power Bank Rules: What You Need to Know
You've packed your bags, you're heading to the airport, and somewhere in your carry-on is a portable charger. The question: will TSA let it through?
The short answer is yes — in most cases. But there are real rules, and breaking them doesn't just mean a warning. TSA agents can and do confiscate power banks that break the rules, even expensive ones.
This guide breaks down exactly what the TSA power bank rules are in 2026, how to calculate whether your charger is within the limit, and what to do if you're not sure.
The Core TSA Rule for Power Banks
The TSA follows Federal Aviation Administration (FAA) guidelines for lithium batteries on aircraft. The rules exist because lithium batteries can be a fire hazard — and fire in a cargo hold is far more dangerous than fire in the passenger cabin.
Here's the rule in plain English:
Power banks must go in your carry-on bag or personal item. They are NOT allowed in checked bags.
That's the most important thing. Airline check-in staff and TSA agents both enforce this. Checked bags with power banks get flagged at baggage screening. The power bank gets removed, and you may not get it back.
Watt-Hour Limits: The Number That Matters
TSA doesn't restrict power banks by mAh — they use watt-hours (Wh), the standard unit the FAA uses for lithium batteries.
| Category | Limit | Status |
|---|---|---|
| Under 100Wh | Unlimited quantity | ✅ Allowed in carry-on |
| 100–160Wh | Up to 2 per passenger with airline approval | ⚠️ Requires airline approval |
| Over 160Wh | Not allowed on commercial aircraft | ❌ Prohibited |
99% of consumer power banks fall under 100Wh. Unless you're carrying a laptop-grade battery pack or industrial charging station, you're almost certainly within the limit.
How to Calculate Watt-Hours from mAh
Most power banks are labeled in milliamp-hours (mAh), not watt-hours. Here's how to convert:
Formula:
Watt-Hours (Wh) = (mAh × Volts) ÷ 1,000
Most lithium batteries operate at 3.7V nominal voltage.
| mAh Rating | Wh (at 3.7V) | TSA Status |
|---|---|---|
| 5,000mAh | 18.5Wh | ✅ Well under limit |
| 10,000mAh | 37Wh | ✅ Well under limit |
| 20,000mAh | 74Wh | ✅ Under limit |
| 26,800mAh | ~99Wh | ✅ Just under 100Wh limit |
| 30,000mAh | 111Wh | ⚠️ Requires airline approval |
Practical takeaway: Any power bank 26,800mAh or under at 3.7V is under 100Wh and allowed in carry-on without special approval.
TSA Power Bank Rules: Full Breakdown
✅ What's Allowed (Carry-On)
- Power banks under 100Wh — no quantity limit
- Power banks 100–160Wh — up to 2 per passenger (with airline approval)
- Any brand or type of lithium battery power bank within the limits
- Power banks with built-in cables (like Clutch Charger) — no special rules
- MagSafe battery packs and wireless charging power banks — same rules apply
❌ What's Not Allowed
- Power banks in checked bags (any size — this is a hard prohibition)
- Power banks over 160Wh on commercial flights
- Spare lithium batteries loose in checked bags (same rule — lithium batteries must stay in carry-on)
- Damaged or visibly swollen batteries (TSA agents can reject these on safety grounds)
⚠️ Gray Areas
- Recalled batteries: TSA and airlines can reject batteries that have been recalled for safety issues. If your power bank was part of a recall, don't try to fly with it.
- Airline-specific rules: Individual airlines may have stricter policies than the TSA. Check your airline's website if you're carrying anything above 100Wh.
- International flights: Other countries have their own rules. In general, most countries follow similar FAA-derived limits, but check before you fly internationally.
Do Power Banks Need to Be in a Specific Place in Your Carry-On?
No. You don't need to put power banks in a special compartment or take them out for screening. They go through the X-ray machine with the rest of your carry-on.
Exception: If a TSA agent asks you to remove your power bank from your bag during screening, do so. This sometimes happens with larger or bulkier packs where the X-ray image is unclear.
What Happens If Your Power Bank Is Confiscated?
If TSA flags your power bank at the checkpoint, they'll typically:
- Inform you it violates regulations (usually because it was in a checked bag or is over the watt-hour limit)
- Give you the option to retrieve it and find another solution (e.g., shipping it home)
- Confiscate it if you can't resolve it before your flight
Confiscated items generally can't be reclaimed. TSA occasionally has a process for retrieving items left at checkpoints, but it varies by airport and is not guaranteed.
The lesson: Know the rules before you travel. A $60 power bank is not worth a delayed flight.
Tips for Hassle-Free Travel with a Power Bank
1. Carry it in your personal item or carry-on backpack
Keep your power bank somewhere easy to access. If a TSA agent asks you to remove it, you want to be able to grab it quickly without holding up the line.
2. Know your capacity in watt-hours
Check your power bank's spec sheet or look on the battery itself — many manufacturers print the Wh directly on the label. If you see "37Wh" or similar, you're under the limit without any math needed.
3. Travel with a slim, purpose-built charger
Bulky power banks draw more attention during screening. A slim, card-sized charger like the Clutch Charger goes through security with almost no friction — it's recognizably a portable charger, it's compact, and it's nowhere near the watt-hour limit. Shop the Clutch Charger →
4. Charge your power bank before flying
A fully charged power bank isn't a TSA requirement, but some international airports have asked passengers to demonstrate that electronics are charged and functional. It's rarely enforced on domestic US flights, but worth knowing.
5. Don't put anything lithium-based in checked bags
This applies to power banks, spare laptop batteries, and external battery packs. If it has a lithium battery, it goes in the cabin.
International TSA Rules: Flying Out of the US
When you fly out of a US airport, TSA rules apply at departure. When you fly back into the US, you're subject to TSA rules again plus any customs considerations.
For international layovers, be aware:
- UK/EU: Follow similar limits to the US (100Wh without approval)
- China: Stricter — limits at 100Wh without airline pre-approval, often enforced more rigorously
- Australia: Same 100Wh limit, sometimes requires batteries to be stored in a protective case
For all international travel, check the airline's website AND the destination country's aviation authority rules.
Common Questions at TSA Checkpoints
"Does my power bank need to be turned off?"
No. You don't need to turn your power bank off to bring it through security.
"Do I need to declare my power bank?"
No, not on domestic US flights. For some international routes, airlines may ask you to declare batteries on the manifest — check your airline's requirements.
"My power bank doesn't have a watt-hour label — how does TSA handle it?"
TSA agents may ask you to identify the capacity. If you can calculate it (mAh × V ÷ 1000) and show it's under 100Wh, you'll usually be fine. For peace of mind, bring power banks with clear capacity labeling.
Frequently Asked Questions
What are the TSA rules for power banks?
TSA power bank rules require that power banks travel in carry-on bags, not checked bags. Power banks under 100Wh are allowed without restriction. Power banks between 100–160Wh require airline approval and are limited to 2 per passenger. Power banks over 160Wh are prohibited on commercial aircraft.
Can I bring a power bank in my checked bag?
No. Power banks (and all lithium batteries) are prohibited in checked bags by TSA and FAA regulations. This rule applies to all airlines and all airports in the United States. Always carry your power bank in your carry-on or personal item.
How many power banks can I bring on a plane?
Under 100Wh power banks: no quantity limit in carry-on. Between 100–160Wh: maximum 2 per passenger with airline approval. There's no specific rule limiting the number of sub-100Wh chargers, though airlines can use discretion for unusually large quantities.
What happens if I accidentally pack a power bank in a checked bag?
Checked bags are X-rayed for lithium batteries. If TSA flags your bag, they'll typically remove the battery. You may be asked to retrieve it at the checkpoint before your bag is checked, or it may be confiscated. In either case, you could miss your flight.
Are MagSafe power banks allowed on planes?
Yes. MagSafe power banks follow the same TSA power bank rules as any other portable charger — they're allowed in carry-on bags under the same watt-hour limits. Most MagSafe power banks are 5,000–10,000mAh, well under the 100Wh limit.
Does TSA check the watt-hours of my power bank?
TSA agents generally don't measure watt-hours at the checkpoint. However, if your power bank looks unusually large or you're flagged, they may ask about capacity. TSA agents have the authority to confiscate batteries they believe violate FAA limits.