0:00 Your cell phone, your laptop, and even an electric scooter. All of them are powered by lithium batteries.

0:06 While this power source is attractive because of the high amount of energy contained in such a small package, it is classified as a hazardous material and poses a significant fire risk.

0:15 So here's the crash course on what they are and how they can be mailed safely. Lithium batteries are divided into two types.

0:22 Lithium-ion batteries are the rechargeable type commonly found in phones, laptops, tablets, digital cameras, and headphones,

0:30 as well as in larger items like e-bikes and scooters.

0:33 Lithium-metal batteries are non-rechargeable and found in film cameras, flashlights, and some small electronics.

0:40 You can mail some lithium batteries, but strict rules apply depending on the battery type, size, and whether they are installed in the device or shipped separately.

0:49 Lithium-ion batteries over 100 watt hours, such as those commonly found in most e-bikes, scooters, or electric cars,

0:56 present a higher level of risk and are prohibited in the mail.

1:00 Small consumer type batteries can be mailed under certain conditions.

1:04 Also note, batteries installed in devices have fewer shipping restrictions than loose individual batteries.

1:10 Used, damaged, or defective devices containing lithium batteries pose an increased risk and are restricted to domestic  surface transportation only and with proper markings.

1:20 Also standalone or individual batteries are limited to 5 pounds, restricted to domestic surface only shipping with proper markings.

1:28 When it comes to packaging and labeling, making sure mailable lithium batteries are properly packaged and labeled ensures the safety of everyone who comes in contact with the package.

1:37 To safely mail lithium batteries, they must meet the current packaging requirements found in the USPS Publication 52 -  Hazardous, Restricted, and Perishable Mail.

1:47 Secure batteries in rigid outer packaging to prevent movement or accidental activation.

1:53 Do not ship batteries loosely, particularly with metal objects. Label packages correctly.

1:58 There are four DOT approved lithium battery markings used for domestic mailing.

2:04 International and Army, Fleet, and Diplomatic Post Office shipments have additional restrictions, so check with your local post office  before mailing to these locations.
2:132 minutes, 13 secondsLithium batteries can overheat, ignite, or explode if damaged or improperly handled.

2:18 If you're uncertain about  mailing a lithium battery, verify eligibility and packaging requirements with your local post office or visit USPIS.gov.

2:26 Select Tips and Prevention, then choose Hazmat Mail for more information. Help us keep the mail safe.