>>384413646
I'm using the VR Power 2 battery pack and it keeps the headset at 100% while I'm using it, looking at the stats on yours it provides less than half the watts so it probably does charge it slower, as long as the battery on the pack runs out before the Q2 does though it shouldn't really make a difference, you'll still be getting the full charge from the battery into the quest which will extend the play time the same as if it was at full charge.