Thank you for your reply. I ended up getting a complete pack with a 4,000 milliamp hour lipo with a 25c rating it's 3s do you think that's sufficient for the 3s power up upgrade is there any way of knowing without amount of information? If not maybe I can take further into it. I misplaced the box but maybe I can find the manual or instructions for the ESC that might have some information about its specs I think the motor is a 3500 I think that means it means the KV rating