So, am I just an idiot that I can't figure out an Anker that Amazon will ship to the USA?
EDIT: I'm an idiot, it's here: https://www.amazon.com/gp/product/B014ZO46LK/ref=s9_acsd_al_bw_c_x_2
The correct one to review would be this one.
It's a bit expensive right now though.
1500mAh is only a 1.5A charge. That's standard for most battery packs, nothing great. My old Motorola P4000 charges at 1.5A.
This Anker 20,100mAh on Amazon is $79.99 (not Prime) and supports up to 2.4A on standard USB and 3A on Type-C.
Here's a similar Anker 20,100mAh one without Type-C for only $45.99 (Prime). It is limited to 2.4A like all standard USB ports though. It does come with the wall adapter too however.
There's also this 20,100mAh one from RavPower for $55.99 (Prime) that's the same capacity and 2.4A USB and 3A Type-C capability (except it also supports QuickCharge2.0)
Or this RavPower 26,800mAh behemoth for only $49.99 (Prime) without Type-C that will charge up to 2.4A via stadard USB.
Both of the RavPower devices have good reviews and I've never had an issue with them or Anker before.