DJI MATRICE 100
The Matrice series is the most powerful of the quadcopter multirotor options offered by DJI. The Matrice 100 embodies maximum payload and maneuverability. Fly missions autonomously for more than 30 minutes without battery swaps. Use the sensors that are too heavy to use on most other platforms. For industrial-style jobs (mapping, inspections, etc.), you will be hard-pressed to find a better option.
The modular design of the Matrice 100 allows for modifications to the craft, and for easily switched out sensors to maximize efficiency.
Use two batteries to achieve flight times of greater than 30 minutes, so you can finish that mapping job without having to worry about battery swaps.