This is by far my favorite smaller-sized power bank

i received a replacement battery and it worked perfectly!so far this is still the best power bank compared to the ones i used before

I bought the Anker Astro E1 5200mAh Candy bar-Sized Ultra Compact Portable Charger (External Battery Power Bank) with High-Speed Charging PowerIQ Technology back in January of 2017

This is one of my favorite Anker power banks

The new Astro charges my tablet without overheating so I can recommend this compact power bank.

Great battery power bank!

Great power bank

Great little power bank, charges my iPhone like a charm.

I had owned the previous model of the 6700 mAh Astro Anker Astro 6700mAh Ultra-Compact Premium Portable Charger (2nd Generation External Battery Power Bank) with Fast Charging

this is by fat the best power bank i have purchased

It was my favorite power bank I had bought ever

Best Power Bank for its size

LOVE THIS POWER BANK

Good power bank

The best and most convenient power bank out there

This is the perfect power bank

I really love this power bank

Great little power bank

Another awesome power bank from Anker

A great compact power bank.

I loved my first power bank until it stopped working, and I love the Anker charging cables and car chargers that I have

It's just a great battery bank overall

but now I have two defective Anker power banks with no option to return it anymore

It charges my Samsung Galaxy 2 and half from zero great power bank from anker no more other brands, the only thing I didn't like is that it doesn't charge while it charging the devices, my old anker, I can charge my phone with

having a smartphone almost necessitates buying a portable battery bank to keep your phone up and running

This unit works as it should and I am very pleased with the battery as with all of my Anker products.

and it's still working as if I just purchased it

If only it could recharge itself as well as it charged my phone

Doesn’t work as for the length of time it states

Highly recommend as with all anker products I have