I've ordered a BlackVue 650 2ch, as I wanted the parking mode feature. However the Power Magic Pro doesn't look like it'll be capable of lasting very long, as I'll be leaving the car for 24 hours sometimes. I've noticed a few people mention Cellink Battery B - but these are rather pricey on Amazon. Then it struck me. What about using a power bank like Anker with 20,000 (or even higher capacity ones). As long as they have the IQ charging feature to provide the camera with enough juice, is this a viable option? Logistically, is it even possible to integrate this into the dash cam setup so it can be used for parking mode and then charge the bank whilst the car is running?