Yes my 7C came with the 600mah nicad pack but I swapped it for the Eneloop 2000mah NiMh pack from the local hobby shop..
It works perfectdly and I get over 10 hours of constant use with this pack..
I bought mine from Perth RC.. here is a link to their TX batteries.
http://secureshopping.perthrc.com.au...-Battery-Packs
i also found the pack here.. in Australia also..
http://www.duanesplanes.com.au/produ...2&cat=8&page=1
The 7C is a beautiful radio and works well, butif you can swing the $$ for the Super8FG it is a much nicer radio.. (and 14 channel)
[youtube]http://www.youtube.com/watch?v=QNNljwYrmLo[/youtube]
Here is the 8FG vs the DX8
[youtube]http://www.youtube.com/watch?v=OBGEDBL5JXQ[/youtube]