Hi, just looking at the crusing current rating you gave here https://github.com/uavpal/disco-docs/wiki/batteries, it seems to be more like half that, 45 minute flight time -2.7Ah, 2.7/0.75, average current draw would be a maximum of 3.7A.
Also I saw you had the titan battery there, just wondering if anyone has any success in using a 3S1P configuration, any heat issues, going by the specs it seems unlikely to create problems.