Without a device that takes frequent current/voltage measurements over time, it's hard to tell what the draw is. One way to approximate this is to use your runtime and battery capacity. You can try
this or:
1: Take your battery capacity in Ah and multiply by 60 to get amp-minutes.
2: Divide the result in #1 by your runtime in minutes. This is the average current draw.
3: Since motors can pull 6-8x the average power in bursts, multiply the average figure in #2 by 6 and/or 8.