I use 2S Lipo, 1000MAH with an 8 amp 5V-6V SBEC double sided taped directly on lipo and place in airframe as needed. Power RX thru a Y harness on the throttle servo that drive nitro carberator.
OR
This is cool...........
https://hobbyking.com/en_us/turnigy-...e-display.html
Yea, that is cool. It's also not available and no ETA at this time. That's the problem with almost everything I see at HobbyKing.