Replacement battery?

I've seen reference to a couple different batteries that should fit/work, for those looking to replace the battery for one reason or another and figured I'd consolidate things here...

http://planetfon.ru/akkumuljator-li-...--5000mah_l238
http://www.allbatteries.co.uk/tablet...-tml90080.html

The challenge being for some that neither of those will ship to the US (no one will internationally probably, because of our lipo shipping restrictions).
Anyone found a supplier in the states with something similar?