Can I bring Anker Astro Mini on airplane?

It should be fine. Their battery stuff is not clear but does not apply to small electronics.

You're fine, even in carry-on luggage. Carry-on regulations prohibit "loose" batteries, but they're fine if they're installed in a device. The charger/housing for the Anker is most definitely a "device," because it includes all the necessary safety circuitry any other LiIon device would have.

I don’t know if a li-ion battery pack counts as “installed” or “spare,” but in either case, you’re better off with them in your carry on baggage, according to the TSA.

Personally I'd carry it on the plane instead of checking it as well. I've never had an issue with battery packs in my carry on luggage.

I've traveled with this exact charger and never had a problem.

Thanks everyone! Got it in my carry on. :)

I took a larger anker battery to Europe and back, as well as a couple of spare 18650s in a plastic case. No issues either way with these in my laptop bag (carry on)

Edit: spelling