i haven't flown in years and all my battery packs are bad. The ones I have are below:

transmitter JR 9.6v 600mAh

receiver 4.8V 600mAh

I looked on Horizon hobby and they do not have the battery packs that match up exactly with these numbers, 600mAh, 9.6, 4.8 etc.

Do I have to have the exact same battery packs to run in these things? Any help would be appreciated. I don't know much about these things except what the control inputs on the transmitter does.

thanks