Abstract: Embodiments described herein may relate to methods and systems for supplying auxiliary power to an unmanned aerial vehicle (UAV) with different flight modes. In particular, the system may determine that a UAV is operating in a first flight mode. Responsively, the system may cause the UAV to draw power from a first power source at a first power level while operating in the first flight mode. Subsequently, the system may determine that the UAV switched from operating in the first flight mode to operating in a second flight mode. Responsively, the system may cause the UAV, while operating in the second flight mode, to continue drawing power from the first power source at the first power level and draw power from a second power source at a second power level, where the UAV consumes power at a higher rate during the second flight mode than during the first flight mode.