Вот рассылка от USPS по корпоративным клиентам
Effective May 7, 2012, we are revising IMM part 136 to stipulate that
lithium metal or lithium-ion cells or batteries may not be sent in
international mail. The restriction applies regardless of quantity, size,
watt hours, and whether the cells or batteries are packed in equipment, with
equipment, or without equipment. The restrictions also apply when mailing to
an APO, FPO, or DPO location outside of the United States (including its
territories).
In addition, we will make parallel changes to other USPS publications that
make reference to the international mailing of lithium batteries such as the
Domestic Mail Manual (DMM(r)) and Publication 52, Hazardous, Restricted, and
Perishable Mail.
Rick Klutts
Product Classification
USPS Headquarters
US Postal Service