Most e-bike batteries are far too large to take on a passenger plane. Enter your battery’s voltage and amp-hours (or watt-hours) to see its size and where it falls against the FAA’s limits for lithium-ion batteries.
E-bike Battery Flight Checker
Check your battery’s watt-hours against the FAA passenger limits.
Can you take an e-bike battery on a plane?
Usually not. E-bike batteries commonly hold several hundred watt-hours, while the U.S. Federal Aviation Administration caps the larger spare lithium-ion batteries passengers can carry at 160 Wh, and only with airline approval (FAA PackSafe: spare lithium batteries). A typical 36V 14Ah pack holds 504Wh, more than three times that ceiling.
The checker turns your battery's label into watt-hours and shows which FAA band it falls in. For the full picture, including what airlines say about e-bikes themselves, read our guide on taking an e-bike battery on a plane.
What are the FAA limits for lithium-ion batteries?
| Battery size | FAA rule for spare batteries | Where it can go |
|---|---|---|
| 100 Wh or less | Allowed without airline approval | Carry-on only |
| 101 to 160 Wh | Allowed with airline approval, up to two spares | Carry-on only |
| Over 160 Wh | Above the passenger limits | Expect airlines to refuse it |
The FAA's page on battery-powered recreational vehicles adds that a device with a lithium-ion battery over 160 Wh is prohibited in carry-on and checked bags (FAA PackSafe: portable recreational vehicles). It also tells travellers to contact the airline first, noting that many airlines don't accept these devices.
How do I work out my battery's watt-hours?
Multiply the voltage by the amp-hours. If the label shows milliamp-hours (mAh), divide by 1,000 first to get amp-hours.
Watt-hours = Volts × Amp-hours
For example, a 48V 10Ah battery holds 480Wh, and a 36V battery rated 14,000mAh holds 36 × 14 = 504Wh. Many newer batteries print the watt-hours directly on the label, so check there first. Our e-bike battery Wh calculator converts between volts, amp-hours and watt-hours in either direction.
How common e-bike batteries compare with the limits
| Battery | Watt-hours | FAA band |
|---|---|---|
| 24V 10Ah | 240 Wh | Over 160 Wh |
| 36V 10Ah | 360 Wh | Over 160 Wh |
| 36V 14Ah | 504 Wh | Over 160 Wh |
| 48V 14Ah | 672 Wh | Over 160 Wh |
| 52V 17.5Ah | 910 Wh | Over 160 Wh |
Even small packs land well above 160 Wh. That's why travellers usually ship the battery separately, buy or rent one at their destination, or rent an e-bike when they arrive.
What are the alternatives to flying with my battery?
- Ship it: some carriers accept lithium batteries as dangerous goods with special packaging and labels. Ask the carrier about its rules and costs before you pack.
- Rent at your destination: renting an e-bike or a compatible battery avoids shipping altogether.
- Fly the bike without the battery: some airlines accept the bike frame as sports equipment once the battery is removed. Confirm this with the airline in writing.
Frequently Asked Questions
Can I put my e-bike battery in checked luggage?
No. The FAA requires spare lithium batteries to travel in carry-on bags only, and e-bike batteries are usually too large for carry-on as well.
Does draining the battery make it allowed?
No. The limits are based on the battery's rated watt-hours, not on how much charge is in it.
Are airline rules the same as the FAA rules?
Airlines can be stricter than the FAA. Check your airline's dangerous goods page or call them before you travel.
Do these rules apply outside the U.S.?
This checker uses FAA figures. Other countries and airlines publish their own rules, so check with the airline you're flying.
What if my battery label only shows mAh?
Divide the mAh by 1,000 to get amp-hours, then multiply by the voltage. 14,000mAh at 36V is 504Wh.