Not sure if this causes any issues in regards to e-cigarette batteries.
http://www.engadget.com/2012/05/11/usps-battery-ban/
http://www.engadget.com/2012/05/11/usps-battery-ban/
I find it curious that it's only an international shipment ban.
I thought UPS already refuses to ship lithium batteries, that's one reason people are using USPS and FedEx?US Postal Service Will Not Ship Tablets, Smartphones Internationally Starting May 16 - International Business Times
Lithium batteries implicated in at least two fatal cargo plane crashes since 2006. Not good at all.
This is the one I use...Do we know what brands of bags are ACTUALLY effective?