Futaba New battery for futaba xmitter

[70sflyer]

I am going to replace my battery in my Futaba 7C transmitter. I want to go lipo. What size would be a good choice.Thanks

 

[D.O.G.]

How about this NEW 9.6v 2000mAh Transmitter Radio Battery Pack Futaba 7c

 

[70sflyer]

How about this NEW 9.6v 2000mAh Transmitter Radio Battery Pack Futaba 7c

Thanks D.O.G.I was thinking about that size but wanted another opinion.