I thought hk post had issues with lipo.
Some postal service dont like batteries to be inside the device.
Some couriers only allow 1 battery in a tool, and no spares.
Here is fedex (which doesnt apply to most chinese/hk).
http://www.fedex.com/au/tools/lithium.html----
From
http://calculator.shipito.com/en/prohibited_restricted_items?country=AUUsps Shipping Restrictions
*Lithium Ion Batteries, only 2 per packages and must be installed in devices
Airmail Shipping Restrictions
*Lithium Batteries, or Batteries in general.
Rupost Shipping Restrictions
*Loose Lithium batteries are limited to 2 count per package .
*No limit on Lithium Batteries that are installed in devices or packed with devices
Boxberry Shipping Restrictions
*Loose Lithium batteries are limited to 2 count per package .
*No limit on Lithium Batteries that are installed in devices or packed with devices
Shipito Australia Preferred Carrier Shipping Restrictions
*Loose Li-ion battery (PI965)
TNT / DHL / FEDEX (despite the link i made above)
nothing listed here