The TSA has limited carrying batteries in checked luggage and limited them in carry-on luggage since 2008. The FAA the rules even more last February.
UPS requires a label on any shipped package with li-on batteries inside, and USPS bans shipping anything with a li-on battery internationally.
OLD 2008 TSA RULE
Effective January 1, 2008, the following rules apply to the spare lithium batteries you carry with you in case the battery in a device runs low:
•Spare batteries are the batteries you carry separately from the devices they power. When batteries are installed in a device, they are not considered spare batteries.
•You may not pack a spare lithium battery in your checked baggage
•You may bring spare lithium batteries with you in carry-on baggage – see our spare battery tips and how-to sections to find out how to pack spare batteries safely!
•Even though we recommend carrying your devices with you in carry-on baggage as well, if you must bring one in checked baggage, you may check it with the batteries installed.
The following quantity limits apply to both your spare and installed batteries. The limits are expressed in grams of “equivalent lithium content.” 8 grams of equivalent lithium content is approximately 100 watt-hours. 25 grams is approximately 300 watt-hours:
•Under the new rules, you can bring batteries with up to 8-gram equivalent lithium content. All lithium ion batteries in cell phones are below 8 gram equivalent lithium content. Nearly all laptop computers also are below this quantity threshold.
•You can also bring up to two spare batteries with an aggregate equivalent lithium content of up to 25 grams, in addition to any batteries that fall below the 8-gram threshold. Examples of two types of lithium ion batteries with equivalent lithium content over 8 grams but below 25 are shown below.
•For a lithium metal battery, whether installed in a device or carried as a spare, the limit on lithium content is 2 grams of lithium metal per battery.
•Almost all consumer-type lithium metal batteries are below 2 grams of lithium metal. But if you are unsure, contact the manufacturer!
NEW FAA RULE
Batteries Carried by Airline Passengers
Frequently Asked Questions
Q1. What kinds of batteries does the FAA allow in carry-on baggage (in the aircraft cabin)?
A1. Passengers can carry most consumer-type batteries and portable battery-powered electronic devices for their own personal use.
Spare batteries must be protected from damage and short circuit. Battery-powered devices must be protected from accidental activation and heat generation. Batteries allowed in carry-on baggage include:
Dry cell alkaline batteries: typical AA, AAA, C, D, 9-volt, button-sized cells, etc.
Dry cell rechargeable batteries such as Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCad).
For rechargeable lithium ion batteries; see next paragraph.
Lithium ion batteries (a.k.a.: rechargeable lithium, lithium polymer, LIPO, secondary lithium). Passengers may carry all consumer-sized lithium ion batteries (up to 100 watt hours per battery). This size covers AA, AAA, cell phone, PDA, camera, camcorder, handheld game, tablet, portable drill, and standard laptop computer batteries. The watt hours (Wh) rating is marked on newer lithium ion batteries and is explained in #3 below. External chargers are also considered to be a battery.
Passengers can also bring two (2) larger lithium ion batteries (100-160 watt hours per battery) in their carry-on. This size covers the largest aftermarket extended-life laptop batteries and most lithium ion batteries for professional-grade audio/visual equipment. Most lithium ion batteries for consumer electronics are below this size.
Lithium metal batteries (a.k.a.: non-rechargeable lithium, primary lithium). These batteries are often used with cameras and other small personal electronics. Consumer-sized batteries (up to 2 grams of lithium per battery) may be carried. This includes all the typical non-rechargeable lithium batteries used in cameras (AA, AAA, 123, CR123A, CR1, CR2, CRV3, CR22, 2CR5, etc.) as well as the flat round lithium button cells.
Nonspillable wet batteries (absorbed electrolyte), limited to 12 volts and 100 watt hours per battery. These batteries must be the absorbed electrolyte type (gel cells, AGM, etc.) that meet the requirements of 49 CFR 173.159a(d); i.e., no electrolyte will flow from a cracked battery case. Batteries must be in strong outer packagings or installed in equipment. Passengers are also limited to two (2) spare (uninstalled) batteries. Spare batteries’ terminals must be protected (non-conductive caps, tape, etc.) within the outer packaging. Batteries and outer packaging must be marked “nonspillable” or “nonspillable battery.” Note: This exception is for portable electronic devices, not for vehicle batteries. There are separate exceptions for powered wheelchairs.
Q2. What kinds of batteries does the FAA allow in checked baggage?
A2. Except for spare (uninstalled) lithium metal and lithium-ion batteries, all the batteries allowed in carry-on baggage are also allowed in checked baggage. The batteries must be protected from damage and short circuit or installed in a device. Battery-powered devices—particularly those with moving parts or those that could heat up—must be protected from accidental activation. Spare lithium metal and lithium ion/polymer batteries are prohibited in checked baggage—this includes external chargers.
Q3. How do I determine the watt hours (Wh) rating of a battery?
A3. To determine watt hours (Wh), multiply the volts (V) by the ampere hours (Ah). Example: A 12-volt battery rated to 8 Amp hours is rated at 96 watt hours (12 x 8 = 96). For milliamp hours (mAh), multiply by the volts and divide by 1000.
Q4. Is there a limit to the number of batteries I can carry?
A4. There is no limit on the number of most consumer-size batteries or battery-powered devices that a passenger can carry for personal use. The larger lithium ion batteries are limited to two (2) batteries per passenger; see “Lithium ion batteries” explanation above. Only two (2) spare/uninstalled nonspillable wet (absorbed electrolyte) batteries may be carried.
Q5. What does “protected from short circuit” mean?
A5. When metal objects such as keys, coins, tools or other batteries come in contact with both terminals of a battery it can create a “circuit” or path for electricity to flow through. Electrical current flowing through this unprotected short circuit can cause extreme heat and sparks and even start a fire. To prevent short circuits, keep spare batteries in their original packaging, a battery case, or a separate pouch or pocket. Make sure loose batteries can’t move around. Placing tape over the terminals of unpackaged batteries also helps to insulate them from short circuit.
For a quick reference guide, see illustrated table on next page…
Federal Aviation Administration
February 10, 2015 Office of Hazardous Materials Safety http://www.faa.gov/Go/PackSafe