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FYI: RAVPower 10,000 mAh chargers are on sale for <$20 on Amazon. I think it's the best price I've seen on one of the lightest QC 3.0 compatible chargers.
EDIT: Lightest for the size and including QC 3.0 in and out.
Battery bank questions:
Context: Planning for OR-WA PCT next summer. I will be charging my phone, rechargeable headlamp, and maybe a Garmin Mini. I will need to carry two cables for these (usb-c and micro usb).
1: Quick Charge 3.0 or USB C Power Delivery?
2: Single or Dual Port?
3: Capacity, 10000mah seems pretty standard?
Wildcard: This seems like it could be a good option for simplicity and potential weight savings. Also has dual ports and can charge other things while charging itself. Although it has less capacity at 6700mah.
What have you used and what systems do you like?
IIRC it is: [link]
Purchased in March/2018.