Charging speeds were very good, it would bring my phone (Note 4) from low teens to near full in about an hour and change, it would be great if this supported fast charging but as a universal power bank it works very well as I've read fast charging on certain unsupported devices can damage their battery

The colder they get below freezing the greater the chance it damages the battery

This little thing is amazing and a necessity for people that need that extra juice but don’t want to carry around a bulky battery pack!

Great sturdy little battery.

I loved this backup battery, and it would charge quicker then plugging your phone in and it could charge your whole

Anker makes the best batteries in the world.

awesome battery and customer service.

It has been perfect for my needs - charges my phone fast, has great battery life (about 4 days) and I love how neatly it fits into the palm of my hand - and how little space it takes up in my bag

The battery itself charges very slow, best if left on the charger overnight.

It is very easy to charge, portable, and the battery is great.

Anker makes good battery packs.

I charged it up again and a day later, I was able to use it to resurrect my 0% dead battery on my

Bad: Takes about 6 hours/over night to recharge the portable battery

ANKER is the name you can trust for their portable battery products.

These batteries work great

The battery is good but the device itself is a little bulkier than I had anticipated.

Fantastic battery with lots of charge packed into a little package

This is a great battery

Love this battery.

but I guess after a while it just stops working or the battery goes bad, i don't know?

We didn't need it for almost a year, when I had a business trip and a failing iphone battery.

It's just a great battery bank overall

I prefer the surface that isn't shiny because it doesnt get fingerprints all over it, but overall Anker makes great portable batteries

This is a really great battery at first and is easy for travel, but do not expect to keep it around long.

This is a nice sized battery for backpacking, hiking and campingThis is a excellent battery for backpacking, hiking and camping.

The battery is able to still increase the charge on my phone with heavy usage, quite impressive for something so small

Also, it has a nice battery life, I currently use it with my samsung galaxy s7.

The perfect size portable battery with plenty of power to keep a cell phone charged for at least a full day.

I had a 10,000mAh battery pack that I loved by the same company.

The best battery charger I have found, perfect size for travel

Battery I received was faulty, but support was nice and gave me a replacement within a few days

I haven't used this to charge a dead or nearly dead phone, so I can't speak to that, but it was great to "top off" my battery

It's not a "fast charging" battery pack

Plus which is over two years old with a failing battery for over a year now.

I like this battery

I've also used it to top off the battery on my iPad mini and iPad Pro, and it worked great.

I wanted a compact battery and this is a very convenient size

The battery capacity is large enough where I know I won’t ever be without a dead phone battery

This is my 3rd Anker battery pack and my new favorite at that

Great portable battery

Great portable battery

I like that is small and light weight and it has great battery life.

Worked well and charges my phone very quickly, without depleting its own battery too quickly

Nice battery

I used it to charge my phone overnight (was at 31%), and when I woke up it was at 93% and the battery was dead, showing that it's not simply a display issue

So after trying a couple of portable batteries, I found my favorite one

But then the battery was depleted.

This is a highly reliable and the perfect battery charger one can use, and it's definitely my main go-to battery pack

This is the only external battery brand that I trust/buy from and their customer service makes me like them even more now

Great backup battery

It works perfectly, the battery lasts longer than expected.

We had a 7,000mAh battery (not Anker) that failed after a couple of years of use

If you are using the device very heavily, you will find yourself in a negative charging situation, where you are drawing more power from the phone than can be recharged from your external charger, thus damaging the battery

Highly recommend this compact battery

This little guy was able to bring my 0% dead battery on my iPad Mini 4 to 80% in < 1 hour (draining it completely)

This battery is so nice to have while traveling!

This battery is amazing

I feel like the battery in it doesn't last as long as I

Great charger battery

The device has a very adequate 6700 mAH battery, allowing my phone to be charged twice on a single charge

Never again have to worry about a dead phone battery!

Fastest charging portable battery pack I’ve used

We were planning a trip to Ireland, and she was worried that she would miss picture talking opportunities because of a dead battery

I also use it when I play pokemon go which kills batteries and with

I love this portable battery/charger

Awesome battery

This battery was amazing… until it completely stopped holding a charge after 6 months of daily use.

Anker team offered another battery free of charge as a gift to try it again, thank you and you can send the battery to the same address

They offered to send a replacement and paid for the return of the faulty battery that I first received

Nice battery with proper safety measures

I carry a lot of electronics with me on a daily basis, so I frequently get anxious about having a dead battery.

Recommend this battery, buy it.

I use mine constantly since the IOS11 drains my battery.

This is the first one I've had and right away I needed it for a dead battery.

Good battery life

This battery is awesome for its price but the little pouch it comes with is very cheaply made

This battery is awesome

Good battery charger

Another nice battery from Anker

Great battery life for the size

Upgraded from the 5200mah of the same size, not much new to review, its the same great battery i had before but with more juice.

This is the 2nd portable battery charger that I bought from Amazon within the space of 2 weeks, pre-vacation

I gave my beautiful black battery pack away to my girlfriend's mom to get this nice beautiful shinny red battery

This battery failed to hold a charge after about three or our weeks.

This backup battery works perfectly.

Excellent choice for a portable battery backup

This a sturdy battery about the size of a small candy bar

Like all Anker batteries, they use leading market technology for speed and safety, so the time it takes to charge has proven to be quick and painless (about 90 minutes from approximately 0 to 100)The battery is very durable and looks classy, with the black finish recognizable as an Anker battery with its glossy body and matte black/grey plate around the connectors

Nice compact battery.

originally I gave the red one a 2 star rating because of the cosmetic appearence of the flat/dull red color and because it didn't match the photos; however, it's still a really good battery pack

I tried it with a different cable because it was smaller and it didn't work (now I'm thinking my old battery might have been working fine with a new cord

It has a very good battery life

I backpack frequently and like to use a GPS tracker on my phone while I hike, but this drains the battery pretty quickly

I have charged both batteries overnight and I am lucky if I can get ten minutes before the battery is drained

Good little battery

Not the best battery life but convenient.

The battery itself is well worth the money I will update to 5 stars if the new battery they sent doesn't malfunction

Another broken usb plug great battery pack

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

I have looked at the specs of many competitive external batteries sold at stores like Walmart and Target, and have found price ranges on both sides of the spectrum

This was a life saver for my failing iPhone battery for over two weeks in Europe

nice battery back-up......works well.

nice battery back-up......works well.

Good battery

The average full charge from a fully depleted battery is three hours

bought for wife's flight back east, great battery/recharger for USB stuff

That gave me the opportunity to thoroughly investigate what is available today, and I was both pleased and surprised at how far this technology has come since I got my first "portable" battery.

Best compact sized backup battery I have found

There are many extra battery/chargers available

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

n’t work

n’t work