The Compliance Resource Center has reported that both the domestic hazardous materials transportation regulations and international rules for shipping batteries have undergone significant changes over the past two years.  All batteries, alkaline, lithium, lead, nickel metal hydride, carbon zinc, etc., or battery powered products are subject to 49 CFR 173.21(c) in the U.S. hazardous materials regulations.   Many batteries that were previously unregulated or under-regulated must now be thoroughly evaluated to determine hazard potential. Detailed packaging and communication standards must be followed under. 

Adding complexity to the issue is the fact that shipping requirements vary greatly, depending on the mode of transport and the type of battery.  Battery shipping regulations affect a wide array of industries from manufacturers and part suppliers to freight forwarders and distributors.  Regardless of whether a lithium or lithium ion cell or battery qualifies for the exceptions in the regulations, shippers must still comply with requirements of 49 CFR 173.21(c). That is, the cells and batteries must be securely packaged and offered for transportation in a manner that prevents the dangerous evolution of heat and short circuits.

Both FedEx and UPS will refuse to accept packages not meeting FedEx, Government or IATA requirements.