Shipping lithium batteries through the United States Postal Service (USPS) is permitted—but only under strict conditions to ensure safety. Whether you’re sending a spare battery or a device with installed cells, it’s essential to follow USPS Publication 52 guidel.

1. Identify Your Battery Type and C

Lithium batteries · Lithium-ion (—
· Lithium-metal (non-re—used in camera

2. Conf

Under Packaging of

Requirement	Limit
Maximum per shipment	4 lithium cells or 2 lithium batteries
Watt-hour rating (per cell)	≤ 20 Wh
Watt-hour rating (per battery)	≤ 100 Wh
Lithium content (per cell)	≤ 1 g Li
Lithium content (per battery)	≤ 2 g Li
Device protection	Must be protected against accidental activation and short circuits

3. Pa

To pre 1.Place each batt
2.Use a rigid outer that resists crushi
3.Surround all contents with cushioning material (e.g., foam, packing peanuts) so items cannot shift.
4.Ensure

4. Apply Required Markings and Labels

To pre · DOT-approved lithium battery mark on the address side when
· For internati“Surface Mail Only, Lithium Batteries — Forbidden for Transportation Aboard Passenger Aircraft”(not required for purely
· Clear

5. Addres

To pre 1.Address your package per
2.Pay postage: at a Po
3.Schedule a Pickup or drop off:
· Online Pickup: Go to USPS Schedul
· Drop Bring your package

Always double-check that batteries are not damaged or recalled—damaged batteries are prohibited from mailing.
Keep records of your shipment in case USPS requires additional documentation.
For large batches or high-value items, consider purchasing extra insurance or signature confirmation.