Qz drains battery when running
When Qz is running and connected to a FM9 BT (GPS navigation app and wifi tracking app are running at the same time), even with the phone plugged into a charger, the battery level drops. When autoconnect is disabled (or the connection is terminated manually), this does not happen.
YMMV depending on the phone and charger used, as well as other apps running, but this is a hint that Qz uses a lot of energy, possibly due to the permanent BT communication (and possibly processor power) and should be investigated.