vantrue t2

Is there a downside of using an Anker Powercore Speed 10000 QC power pack to run a Vantrue T2 when the car is parked up ? It's the QC {quick charge} feature that concerns me, the output can go up to 9v... Anker Power Pack If the power pack was fully charged any thoughts on how long it might...

I've just bought a Vantrue T2, (link below), it doesn't come with a micro SD card so I'm looking at what capacity I would need to get say 8-10 hours before the card starts to overwrite. Vantrue T2 I intend to use it at these video settings: H.264 compressed format; 1920x1080P / 30fps I'd...