TSA Rules for Portable Power Stations: Can You Take a 300Wh Battery on a Plane?
Navigating airport security with high-capacity batteries can be the difference between a smooth flight and a confiscated piece of expensive gear. As of 2025 and 2026, the TSA and FAA have tightened enforcement on lithium-ion power sources. If you’re eyeing that 300Wh portable power station for your next trip, here is the hard truth about the current regulations.
Watt-Hour Thresholds for Air Travel
The FAA (Federal Aviation Administration) and TSA base their rules on capacity (Watt-hours), not physical size. For the vast majority of commercial flights, a **300Wh battery is strictly prohibited** for passenger travel.
| Capacity (Wh) | Carry-on Status | Checked Bag Status |
|---|---|---|
| 0 – 100 Wh | ✅ YES (No approval needed) | ❌ NO (Strictly Banned) |
| 101 – 160 Wh | ⚠️ AIRLINE APPROVAL Required | ❌ NO (Strictly Banned) |
| Over 160 Wh | 🚫 FORBIDDEN | 🚫 FORBIDDEN |
🚫 The 160Wh “Hard Wall”
Portable power stations from major brands like Jackery, Bluetti, or EcoFlow that exceed 160Wh are not allowed on passenger aircraft in any capacity. These must be shipped via certified dangerous goods freight (ground or sea). Attempting to bring one to a checkpoint will result in immediate confiscation.
New 2025-2026 Enforcement Rules
Airlines are increasing scrutiny due to a rise in lithium battery fires. As of May 2025, Southwest Airlines and others require that any power bank in use must be kept “on your person” or in an under-seat bag—stowing them in overhead bins while charging is now prohibited.
Furthermore, many international carriers (like Starlux or JAL) have banned in-flight charging of power banks entirely to prevent thermal runaway incidents.
How to Verify Your Device
Don’t trust the marketing name. Always check the label for the Wh rating. If it only lists mAh, use the standard TSA formula to stay compliant:
- 🔢 Formula: (mAh ÷ 1000) × 3.7V = Watt-hours.
- 🔢 Example: A 27,000mAh bank = (27,000 ÷ 1000) × 3.7V = **99.9Wh** (The TSA legal limit).
- ✔️ Pro Tip: Keep your battery in its original packaging or tape the terminals to prevent short circuits, which is a mandatory IATA and FAA requirement.
