Add convenience for your DJI Spark.
Although DJI Spark Drone flight time is much better than early model drones, this is still not enough if you really want to take advantage of the impressive videography features of the drone.
Having an DJI Spark Drone extra battery on hand means you can extend your flight time, with only a quick pit stop back at home base. Keeping an extra battery on hand is essential if you want to take a trip down to the park, or anywhere that you won’t have access to a charger.
Although they can last many cycles, the genuine or 3rd party batteries for DJI Spark Drone do wear out eventually so being able to swap between a pair will extend their useful life.
Dronepedia video - How to Remove and Insert DJI Spark Battery: