A reason it might not be allowed is due to fire risk - anything operated from batteries is supposed to be turned off, and with the battery terminals isolated ..

A reason it might not be allowed is due to fire risk - anything operated from batteries is supposed to be turned off, and with the battery terminals isolated ... these are guidelines from the postal services ... http://www.ups.com/content/us/en/resources/ship/packaging/guidelines/batteries.html http://www.ups.com/content/us/en/resources/ship/packaging/gu... http://www.royalmail.com/despatch-inward-mail-services/hints-and-tips/restricted-goods http://www.royalmail.com/despatch-inward-mail-services/hints...