Lipo-runtime

[BrianG]

It will be hard to give an exact figure because everyone's setup changes. Plus you want max runtime on the smallest battery possible, so that doesn't leave much room for error. The only way to get a true estimate for your situation, drive style, track conditions, etc would be to use whatever 3s battery you have right now (maybe borrow one?), run it, calculate average current draw with that setup, and then calculate required mAh for 15 minutes of running with your calculated average current draw.