The drone technology development as a mapping tool for the agricultural land resource development, taking some aerial photography, infrastructures monitoring, and air patrols by the authorities (police, army) are growing rapidly. However, in existing drones, there are weaknesses in terms of short flight durations so that they are less efficient and effective in their use. The limited duration of the flight will affect the distance of the drone’s flying range and the drone’s speed performance. Therefore, this study aims to create a drone with a swappable battery innovation that utilizes batteries as a short battery replacement and increases the number of batteries installed on the drone so that the flight time automatically increases. This study considers making the battery as the main-frame structure and combines it with 3D printing the drone’s bodies. The results of the swappable battery innovation in this study is the drone prototype with 236.16 Wh energy and 4s4p configuration. The flight time is calculated by a theoretical and actual method. The theoretical method estimated the flight duration through battery voltage, the thrust required, drone dimensions, and drone speed. From the actual method, it is obtained that the use of swappable battery innovation as a drone frame structure can increase the battery capacity of a drone up to four times and flight duration by 2.4 times.