USPS Homepage

USPS Packaging Instruction 9D

Lithium and Lithium-ion Cells and Batteries — Domestic

Primary lithium (nonrechargeable) cells and batteries and secondary lithium-ion (rechargeable) cells and batteries are mailable in limited quantities domestically via air or surface transportation when they are installed in or packed with the equipment they are intended to operate.

  • Individual secondary batteries (without equipment) are mailable in limited quantities domestically via air or surface transportation only, provided the batteries are in the originally sealed packaging.
  • Individual primary batteries (without equipment) are mailable in limited quantities only via surface transportation, provided the batteries are in the originally sealed packaging.

Proper Shipping Name

ID Number

Mailability

Required Packaging

Primary and Secondary Lithium Batteries
Markings
Quantities
Domestic — Primary Lithium Cells and Batteries:

Installed in or packed with the equipment they are intended to operate:

Individual batteries mailed without equipment:

Domestic — Secondary Lithium-ion Cells and Batteries:

Installed in equipment, packed with equipment, or mailed without equipment (individual batteries):

Domestic Lithium Battery Mailability Exhibit

 

 

Surface Transportation

Air Transportation

Mailpiece Weight Limit

Primary Lithium Batteries1, 2

Small non-rechargeable consumer-type batteries

Contained in (properly installed in equipment)

Mailable

Mailable

11 pounds

Packed with equipment, but not installed in the equipment

Mailable

Mailable

11 pounds

Without the equipment they operate (individual batteries in originally sealed packaging)

Mailable

Prohibited

5 pounds

Secondary Lithium-ion Batteries3, 4

Small rechargeable consumer-type batteries

Contained in (properly installed in equipment)

Mailable

Mailable

No more than 3 batteries

Packed with equipment, but not installed in the equipment

Mailable

Mailable

No more than the number to operate the device, not to exceed 3 batteries

Without the equipment they operate (individual batteries in originally sealed packaging)

Mailable

Mailable

No more than 3 batteries

Damaged/Recalled Batteries

Prohibited, unless approved by the manager, Product Classification.