"I think 4-8hrs should be possible in future, there are some very exciting battery technology in development. Lithium-Sulphur battery have double the energy per weight of the current LIPOs. Given that the current record of flight time is around one…"
"@Rana www.taobao.com (currency in RMB)
Actually all RC part are very cheap selling on this site. I guess it is most probably the cheapest in the world. Actually you can find 3dr Radio, ESCs, Sonars, uBlox GPS etc.... in very very good price.