RE: Upgrading TX Battery
Here's the brick pack setup I use in my Raptor 50V2 (I use a flatpack version of this for my JR Venture 30CP):
Step 1: 4 cells
Step 2: CBP2500A cells
Step 3: Brick (or flat, whichever is best for your application)
Step 4: 22AWG Wire (only wire you can get with Hitec Male plug)
Step 5: Hitec Male Plug
Step 6: No (copper bar upgrade option, not needed here)
That's it...