I bought the Mavic2 pro along with a Crystalsky monitor and an extra battery. I fully charged the batteries and went to fly two days later, the batteries were discharged down to 89% . There is no provision in the Crystalsky GO4 app to set the discharge ie: 1 to 10 days, I solved this by doing the set up of the battery discharge time by setting it with the DJI Go 4 on my iPad Pro. Just a heads up