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From what I found on AliExpress, it said this regarding the ZMI:

  • Fast Charge Technology:USB PD 2.0
  • Color :Black
  • Input:5-20V 45W(MAX)
  • Output USB-C:5-20V 40W(MAX)

Part of me says just buy the Anker, as it comes with a wall plug has a slightly better capacity... but part of me says go ZMI just for the slight chance of a faster charge. Depending on efficiency, there may not be much of a difference.

Size and weight are a consideration too. The Anker is nearly 50% heavier at 584g (just weighed mine) vs 405g for the ZMI, and larger too. But the Anker has 33% more capacity....more than "slightly better" in my book!
 
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