Originally Posted by Mython
I guess you got lucky and it slipped under the radar.
I don't wanna make a big deal about it or anything - but if you just read Royal Mails new shipping regulations, I promise you you will see LiPo packs on the disallowed list (I think it's allowed if it's within a device with which it is being shipped, but just not a battery pack on its own)
Wait, isn't this going the opposite direction!? In 2012, UPU & ICAO had an agreed ruling to allow lithium of a certain size. Now US started accepting since Nov 15th 2012, and Japan on Jan 1st 2013 and I understand it some other global postal organisations have been slow to adopt the new ruling on accepting from customers (Aust & Hong Kong) but do receive packages containing lithium from corresponding international postal services.
Here's what I know so far :-
1) in Japan only certain post offices are "trained" to accept packages with lithium based on certain prerequisites (ratio of battery capacity vs size of object, inside or outside of the object, etc.)
2) in Japan's lithium-friendly post offices will only accept the package if it can to a selected list of countries who will receive lithium batteries (so far Aust, HK, Germany, UK, Israel, US are ok)
3) some of those countries that will receive packages with Lithium from Japan Post will not receive packages from sending customers in their country (Aust, HK, and looks like UK too)
4) although in Feb 2013 ICAO reversed their lithium ruling, it was specific to cargo in passenger aircraft (well poor pilots of cargo aircraft!)
So whilst Royal Mail may not accept to be the proxy sender of packages with lithium, at least Japan Post seems to think that they're happy to be a proxy receiver of packages with lithium.
Back to the iBasso and lithium, the issues I've seen iBasso had, had more to do with China post refusing to send for them (or should I say that the batteries they were supposed to send to me boomeranged back the iBasso office).