Can't mail batteries

You're referring to the fact that many types of batteries are prohibited from being shipped through the mail or transported by air due to safety concerns.

In the United States, the United States Postal Service (USPS) and the Federal Aviation Administration (FAA) have specific regulations regarding the transportation of batteries. Here are some general guidelines:

  1. Prohibited batteries: The USPS prohibits the mailing of the following types of batteries:
    • Lithium-ion batteries (except for those used in consumer electronics, such as smartphones and laptops)
    • Lithium-metal batteries
    • Nickel-cadmium (Ni-Cd) batteries
    • Nickel-metal hydride (NiMH) batteries
    • Lead-acid batteries (except for those used in wheelchairs and other mobility devices)
  2. Restricted batteries: The USPS allows the mailing of some types of batteries, but with certain restrictions:
    • Lithium-ion batteries used in consumer electronics (e.g., smartphones, laptops) can be mailed, but must be properly packaged and declared on the shipping label.
    • Alkaline batteries (e.g., AA, AAA) can be mailed, but must be properly packaged and declared on the shipping label.
  3. Special handling: Some batteries require special handling and packaging to ensure safe transportation:
    • Lithium-ion batteries used in devices like e-cigarettes, vape pens, and power banks must be properly packaged and declared on the shipping label.
    • Batteries with a capacity of over 8 grams of lithium content (e.g., some lithium-ion batteries used in electric vehicles) require special handling and packaging.

It's essential to check with the USPS and the FAA for the most up-to-date information on battery shipping regulations, as they can change over time. Additionally, it's always a good idea to check with the recipient's carrier and the destination country's regulations before shipping batteries.