A:AnswerI believe your questions are regarding Karma Grip - The Karma Grip is only compatible with the new GoPro Hero 5 Black. NOT to be confused with GoPro Karma Drone.
The battery in the Karma Grip is not replaceable. It is an integrated battery that is charged with a GoPro specific charger that comes with the Karma Grip. As far as how long battery lasts on full charge, I can tell you that I shot all day on a single charge in Washington DC. I charged it each night and made it the whole next day for 4 days. Now this is not CONTINUOUS shooting this is turn on and off between vacation highlights (6 hours worth over 4 days). The Karma Grip also powers the camera even though the camera has its own battery. When on Karma Grip the camera battery stays at 100% all day. So the Karma Grip is powering itself and the camera.
The battery you are referring to is a large battery (like the size of an old camcorder battery) and is for the GoPro Karma DRONE. These are replaceable - obviously because you get 20 minutes flight time on each battery charge. I have 4 batteries so I can stay in the air for longer periods of time.
I hope this answers your questions.
A:AnswerI think the charger has a proprietary connection only made my Gopro and in order to get it to charge via usb would be quite a bit of work, involving multiple uncommon adapters. in order to charge this battery it would probably be best to use the charger that comes with the karma drone
