there is also a upgrade do'able to the DX6 transmitter to make it have longer runtimes, the DX6 has a cheap quality power regulator which is very inefficient.

i found this upgrade while looking for variouse parts for tanks, http://www.dimensionengineering.com/...ektrum_mod.htm , it does require some skill with a soldering iron and will invalidate your warrenty (but it seems worth it)

the results will increase runtime from about 2hours 19mins to about 5hours 33mins