Need some battery help :)

[Wildjones]

Alright you electric gurus you, I need some battery help. Probably a dumb question too so heads up..

I have a Hirobo XRB SR heli that I really enjoy flying. I packed it up for around a year due to a switch in interests. Stupid me, I forgot to take care of the battery. Finding batteries is hard as heck, and the few that I have found are in the 53-74$ price range, which is RIDICULOUS. The stock battery is a 2S 710mah battery. The problem is the plug.

So I ask you this, the plug combines the charge leads with the regular output leads. Is it possible to take say one of these http://www.amainhobbies.com/product_...tor-74V-730mAh and sodder it up to match this? http://www.amainhobbies.com/product_...ack-74V-720mAh

If yes, how does one go about modifying a plug to do that?

PS. I know this is really a car forum, but you guys have given me excellent electrical advice in the past and trust your guys' knowledge like its the bible

Thanks!

- Mike