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Anker Astro E1 5200mAh Candy bar-Sized Ultra Compact Portable Charger (External Battery Power Bank) with High-Speed Charging PowerIQ Technology (Black)

8,823 customer reviews

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The Anker Advantage: Join the 30 million+ powered by our leading technology.
Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 2 amps (four times faster than a computer USB port). Does not support Qualcomm Quick Charge
High Capacity: Add almost two full charges to an iPhone 7 or 6s or at least one full charge to a 7 Plus, Galaxy S7, Nexus 5 or other smartphone. Or almost a 70% charge to an iPad mini 3.
Incredibly Compact: The size of a small candy bar (3.8 × 1.7 × 0.9in, 4.2oz) it fits perfectly in your pocket. Recharges in 5 hours with a 1A adapter (not included) and the included Micro USB cable.
What You Get: Anker Astro E1 Portable Charger External Battery Power Bank, Micro USB Cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.

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AmazonBasics Lightning to USB A Cable - Apple MFi Certified - Black - 4 Inches/10 Centimeters $5.99
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Khanka Hard Case for Anker Astro E1 5200mAh/6700mAh Candy bar-Sized Ultra Compact Portable Charger… $6.69
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From the manufacturer

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Astro Series

With classic styling, advanced technology and quality — the Astro series is here to stay.

Astro E1

With its unrivaled palm-friendly size and enough capacity for around 2 full phone charges - Astro E1 is one of the world’s most popular portable chargers.

Slip it into your pocket, completely forget it’s there, then bring it out for a boost when you’re running low.

2 Charges for Most Phones.
High-Speed Universal Charging.
Unbeatable Portability.

View larger	View larger
PowerIQ Technology By intelligently identifying any connected device, PowerIQ is able to deliver an optimum, high-speed charge to all devices. Includes Apple and Android phones and tablets as well as cameras, consoles and more.	High Capacity Astro E1 is equipped to provide two charges for most phones and single charges for larger devices. It uses premium cells and materials to deliver high-efficiency performance.	MultiProtect A combination of 10 safety features that work together to provide ultimate protection for your devices, your chargers and most importantly: you.	Maximized Portability 5000mAh capacity squeezed into something no larger than a candy bar. Put E1 into any pack or pocket and forget its there, then bring it out for a boost when you’re running low.

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	Astro E1	PowerCore Slim 5000	PowerCore Fusion 5000	PowerCore 5000	PowerCore II Slim 10000	PowerCore 10000
Charging Technology	PowerIQ	PowerIQ	PowerIQ	PowerIQ	PowerIQ 2.0	PowerIQ
# of iPhone 6s Charges	1.9	2.4	2	2	3.7	3.8
# of iPad Mini 4 Charges	0.7	0.7	0.6	0.6	1.2	1.3
# of Samsung S6 Charges	1.7	1.7	1.5	1.3	2.6	2.2
# of USB Charging Ports	1	1	2	1	1	1
Output	5V 2A	5V 2A	As Charger: 5V 2.1A (2.1A max per port); As Power Bank: 5V 3A (3A max per port)	5V 2A	5V=2.4A	5V 2.4A
Max Input	1A	1A	2A	2A	5V=2A	2A
Color	Black, White, Blue, Red	Black, Blue, Red	Black	Black, White	Black	Black, White
Size	3.8 x 1.7 x 0.9 in	4.9 x 2.5 x 0.4in	1.2 x 3.6 x 2.8in	4.2 x 1.3 x 1.3in	5.4 x 2.6 x 0.6in	3.6 x 2.3 x 0.9in
Weight	119g/4.2oz	126g/4.27oz	120g/4.23oz	136g/4.8oz	254g/9oz	180g/6.35oz

Compare with similar items

		[Upgraded to 6700mAh] Anker Astro E1 Candy-Bar Sized Ultra Compact Portable Charger, External Battery Power Bank, with High-Speed Charging PowerIQ Technology	Anker PowerCore 5000, Ultra-Compact 5000mAh External Battery with High-Speed Charging Technology, Power Bank for iPhone, iPad, Samsung Galaxy and more	Anker PowerCore+ mini, 3350mAh Lipstick-Sized Portable Charger (3rd Generation, Premium Aluminum Power Bank), One of the Most Compact External Batteries	Anker PowerCore II Slim 10000 Ultra Slim Power Bank, Upgraded PowerIQ 2.0 (up to 18W Output), Fast Charge for iPhone, Samsung Galaxy and More (Black)
	Add to Cart	Add to Cart	Add to Cart	Add to Cart	Add to Cart
Customer Rating	(8823)	(1164)	(2148)	(26521)	(532)
Price	$16.99	$19.99	$17.99	$16.99	$33.99
Shipping	FREE Shipping	FREE Shipping	FREE Shipping	FREE Shipping	FREE Shipping
Sold By	AnkerDirect	AnkerDirect	AnkerDirect	AnkerDirect	AnkerDirect
Item Dimensions	3.8 x 1.7 x 0.9 in	3.78 x 1.69 x 0.91 in	1.3 x 1.3 x 4.25 in	3.74 x 0.91 x 0.91 in	5.39 x 2.6 x 0.59 in
Item Weight	4.2 ounces	4.16 ounces	4.73 ounces	3.04 ounces	7.05 ounces

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Product description

Color:Black

Astro E1 Portable Charger External Battery Power Bank
Charge your phone on the go.

From ANKER, America's Leading USB Charging Brand
• Faster and safer charging with our advanced technology
• 10 million+ happy users and counting

PowerIQ
Exclusive to Anker. Intelligent high-speed charging for all your devices. Does not support Qualcomm Quick Charge

High Capacity
Charge your Apple or Android smartphone one to two times while on the move. You can even charge an iPad mini 3 to about 70%!

Incredibly Compact
This thing is remarkably small. About the same size as a small candy bar, you simply will not find a more portable powerpack.

Superior Quality
We use only premium battery cells, together with advanced materials and cutting-edge technology, to ensure complete safety.

World Famous Warranty
At Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support.

For Optimal Use:
• Use your original cable or a third-party certified one (such as MFi).
• It is advised not to use in confined, poorly ventilated spaces (e.g. pockets)
• Charging data is calculated in screen-off (standby) mode.
• Compatible with the new 12 inch MacBook, 2015 (USB-C cable needed) Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices.

What's In the Box
Astro E1 Portable Charger
Micro USB cable
Travel Pouch
Welcome Guide

Product information

Color:Black

Product Dimensions

3.8 x 1.7 x 0.9 inches

Item Weight

4.2 ounces

Shipping Weight

6.1 ounces (View shipping rates and policies)

ASIN

B00P7N0320

Item model number

A1211

Batteries

1 Lithium ion batteries required.

Customer Reviews

8,823 customer reviews

4.4 out of 5 stars

Best Sellers Rank

#372 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
#15 in Electronics > Portable Audio & Video > MP3 & MP4 Player Accessories > Batteries & Battery Packs
#15 in Cell Phones & Accessories > Cell Phone Accessories > Batteries & Battery Packs > Portable Power Banks
#373 in Electronics > Cell Phones & Accessories

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Greg Golden

It's great service.

November 13, 2016

Color: BlackVerified Purchase

Bought two of these. Anker is pretty good quality. What we found with this model is that is DOES hold a large electricity supply, but it has very poor shelf life. That is, if I fully charge it, then keep it on my desk for a week or two without using it, it DISCHARGES completely. While in use, yes, it can power a phone or two quite well. But it is not reliable as a backup if it has been sitting around more that a few days.
EDIT:
Dec. 9, 2016: The seller noticed my poor review and felt that they wanted to help me out. They sent me another battery FREE, postage prepaid. It works perfectly-- good shelf life, not like the first two. When I told the seller, then they sent me ANOTHER one... free. So now I have two GOOD ones which do hold the shelf life, from a company who really cares about making the product right!

1,228 people found this helpful

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The perfect battery for your purse, pocket or backpack with an IQ port, a feature that you need!

December 16, 2014

Color: Black

This battery pack is ideal for your purse, pocket or backpack and it is one of the most portable batteries that I have tested. It had good test results. This is an exceptional charger with a feature that everyone needs. The feature is PowerIQ charging technology for the charging port on this battery charger. That means that you can plug in any type of device and this smart port will set the charging current to match the maximum charging rate that your device can safely handle. The port is rated at 5 VDC and up to 2 Amps but in my testing I was able to charge and Apple iPad Air at 2.1 amps.

Many people don't realize that device manufacturers play games by wiring their devices and cables differently so that a charger that is designed to charge an Android device will not quickly charge an Apple device. Manufacturers like Apple, Samsung, Android devices and Chinese smart devices have different circuitry in them and if the charger doesn't match their circuitry they can charge at a much slower rate. The IQ port doesn't care what type of device you plug into it because it adapts its charging rate to match what the device wants by sensing what type of device is plugged into it. I was so impressed that I put together a video of the unit and the test results for your review.

The construction of this battery pack is simply beautiful. The exterior shell is glossy black. The battery weighs in at 4.23 ounces. The battery pack has one smart IQ output port that output 5 VDC at variable current to meet the charging requirements of the device you have plugged into it. It is called a Smart Port or an IQ port. It uses a chip to help select the proper current to allow the maximum safe charging current for the fastest device charging. The port can output as much as 2 amps but the battery pack in my testing output up to 2.1 Amps while charging an Apple iPad Air.

This battery pack has enough power to charge an iPhone 5S 217%. To start your devices charging connect them with the proper cable. (You will probably have to use your own charging cable that came with your device) and charging starts after you press the on button on the side of the battery. The charging will stop automatically when your device is fully charged or the battery pack is depleted.

The battery pack has 4 blue LEDs on it and when it is charging they work like this:

* One LED blinking = less than 25%
* One LED on and one blinking = 25 to 50%
* Two LEDs on and one blinking = 50 to 75%
* Three LEDs on and one blinking = 75 to 99%
* Four LEDs on and the battery pack is fully charged

The Lithium battery can be recharged over 500 times during its life cycle. It comes with an 18 month warranty. It is recommended to charge the battery at 1 Amp and 5 VDC. It will take 5 hours to charge the battery at that charging rate. You can use your USB 2.0 port of your computer it takes 10 hours at ½ Amp input. You can even use an AC powered USB wall charger or a USB car charger and using up to 2 amps will not hurt the battery.

The battery pack does have a power on switch to turn on the charging cycle for your device or to allow you to check the battery's remaining power charge. .

Items in the box:

* The battery itself
* An USB to Micro USB charging cable that is 27 inches long

Anker 5200 mAh second generation battery pack test data:

iPhone 5S unit one 74% - battery fully charged with 4 LEDs

* 30 minutes 96% - battery 4 LEDs
* 50 minutes 100% - battery 4 LEDs

* 26% x 1560 mAh = 405.6 mAh

iPhone 5S unit two 32% - battery 4 LEDs remaining

* 30 minutes 63% - battery 3 LEDs
* 60 minutes 91% - battery 3 LEDs
* 90 minutes 100% - battery 3 LEDs

* 68% x 1560 mAh = 1060.5mAh

Samsung Galaxy Tab 4 at 54% - battery 3 LEDs remaining

* 30 minutes 66% battery 2 LEDs
* 60 minutes 77% battery 2 LEDs
* 90 minutes 89% battery 1 LED
* 120 minutes 97% battery dead

* 43% x 4450 mAh = 1913.5 mAh

Summary of all items charged:

* 405.6 mAh + 1060.8 mAh + 1913.5 mAh = 3379.9 mAh / 5200 mAh = 65% efficiency

* This is a good result and gives this battery a 5 star rating especially after charging a larger tablet in the testing.

Device internal battery requirements:

* iPhone 4 battery 1,420 mAh battery capacity
* iPhone 4S battery 1,432 mAh battery capacity
* iPhone 5 battery 1440 mAh battery capacity
* iPhone 5S battery 1560 mAh battery capacity
* iPad 2 battery 6,944 mAh battery capacity
* iPad 3 battery 11,560 mAh battery capacity
* Kindle Fire battery 4400 mAh capacity
* Kindle Keyboard battery 1750 mAh capacity
* iPad 4 battery is 11,486 mAh 3.7 VDC at 42.5 Wh
* iPad Mini battery is 4490 mAh at 3.72 VDC 16.7 Wh
* iPad Air battery is 8820 mAh capacity
* iPad Air 2 battery is 7340 mAh capacity
* Samsung Galaxy Tab 4 - 8 inch Tablet 4,450 mAh

As you can see the Anker 5200 mAh will not fully charge a totally dead iPad 3 or 4 because it contains only 5200 mAh of capacity. That battery is ideal for recharging your smart phone or smaller smart tablet.

You have to consider the losses in the charging circuits of both the battery pack and the device you are charging so this result is outstanding! When using an external battery you have to allow approximately 30 % of the battery capacity will be lost to heat, voltage conversion, powering the batteries electronics and the electronics of your electronics device's charging circuits. In addition you have to consider that your device is not truly off like a cell phone is still connected to the WIFI and phone networks and probably receiving emails, etc. This is one of the most powerful rechargeable battery packs I have tested.

Real world examples of charging capability with this battery pack:

* iPhone 4 approximately 238% of a full charge out of a fully charged Anker 20000 mAh battery pack
* iPhone 5S approximately 217% of a full charge
* iPad 2 approximately 49% of a full charge
* iPad 3 or 4 approximately 29% of a full charge
* iPad Mini approximately 75.3% of a full charge
* Kindle Fire approximately 76.8% of a full charge
* iPad Air approximately 38% of a full charge
* iPad Air 2 approximately 46% pf a full charge
* Samsung Tab 4 eight inch tablet approximately 76% of a full charge

* A normal estimated usable storage is 70% of capacity or .70 * 5200 mAh = 3640 mAh charging capacity available for your electronic devices.

* In my testing I was able to use approximately 3379.9 mAh of capacity or roughly 65% of the 5200 mAh capacity. This is a good result for a battery of this size. This was based upon the first full charge of the battery pack and the results should get better after the battery is charged several more times.

I was supplied a sample for test and evaluation. A review was not promised to the supplier in exchange for the sample but I stated that if I provided a review that it would be fair and honest.

984 people found this helpful

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slaton evans

Amazing Product At An Amazing Price!

November 4, 2016

Color: BlackVerified Purchase

No wonder this is the top rated portable power bank. I've had this thing for a few months now and wow am I impressed. The charge that this power bank holds is incredible given its size! I use an iPhone SE and I've gotten 2 full charges out of this with extra battery to spare! It's obvious that the folks at Anker really care about giving you a quality product at an unbeatable price. The prices of these things elsewhere are insane. Before purchasing this I looked at Walmart and the ones they had at this price looked horrible. The charge cord was very sturdy and the carrying bag fits the charger and cord perfectly. I also love that it has a battery level indicator. I carry this with my every single day. Would recommend for literally everyone. There's not a smartphone user on this earth that wouldn't benefit from having one of these.

252 people found this helpful

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Good battery, great company!

December 11, 2016

Color: BlackVerified Purchase

It's a battery and does what it's supposed to do: let you safely carry around electricity until you need it. This battery is compact and appears to have the stated capacity based on the number of times it could charge my son's phone before needing to be recharged itself. So, battery-wise, you'll have no regrets if you buy this battery.

I bought this battery on November 11, 2015 (so Amazon tells me at the top of the page). It stopped charging other devices after about 13 months...so a week ago or so. The battery has an 18 month warranty so I wrote to Anker on the night of December 7 and explained the situation. I had a reply in less than 12 hours and in under 24 hours since my initial e-mail I had a tracking number for a replacement battery. The battery was delivered yesterday (December 10) which to me is stunningly great service...I had the replacement battery less than 72 hours after first writing to Anker.

I've been an Anker fan for years...I buy all our chargers, cables, and batteries from them because their products are excellent. This is the first time I've needed to contact support and I'm happy to see their support is as good as their products!

57 people found this helpful

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Chazz

Better Safe than Sorry - You Never Know

January 24, 2017

Color: BlackVerified Purchase

I was out of state and spent a lot of time out of the hotel charging areas. I had an iPhone 6, not suppose to be affected by the new IOS upgrade, but that proved to be wrong. It would go from 70% to 20% in seconds, then shut off. With this condition, if you plug it into a power source for as little as 10 seconds, it will return to the 70% level. The charger worked flawlessly, brought my phone back to life on several occasions, and since it is small, i could leave it in my pocket connected to the phone for a complete charge.
On one occasion, before I had this unit, my wife and I were waiting for an Uber Driver around 10p and the phone went dead, so we lost the ride. We had to rely on a regular taxi, at over twice the price. If I had this charger on that occasion, the savings would have paid for the unit.
I'm on an iPhone 7 now, and have had wonderful results with the battery life, however, if I know I'm going to out and about in an extended period of time, you'd better believe I'll have it with me. You Never Know!

11 people found this helpful

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Most recent customer reviews

Amazon Customer

Good not great

I bought this charger in April of 2017. I used it almost everyday at work and it worked great! Earlier this week it started to not hold a charge very long.Read more

Published 9 hours ago

Rachel

This is a great charger. It really does two full charges

This is a great charger. It really does two full charges. It’s small and compact and comes with s nice little bag.

Published 10 hours ago

Terry K

Brand new - does not charge

fresh out of the box - 25% charged. Plugged into wall overnite (12 hours) still only 25%. POS - don't waste your money - brand new does not work!!

Published 20 hours ago

Amazon Customer

Five Stars

Compact and does exactly what I need it to do. Haven't run into any issues.

Published 1 day ago

E. Headrick

Phone saver

Has saved me several times when my phone needed a charge. I can leave and use my phone all day with no worries.

Published 2 days ago

Amazon Customer

Perfect for traveling and concerts

Charges my phone really quickly and holds its own charge for days! Perfect for traveling and concerts!

Published 2 days ago

Andrew Torres

Top tier charger

One of the best portable chargers out there for the amount of recharges and price. I can fully charge my IPhone 7 plus 3 times before I need to recharge the Anker.Read more

Published 2 days ago

Evelyn E. Espinosa

It was great while it worked

It was great while it worked. It would charge my phone pretty quickly.. The charger took a much longer time to charge itself.

Published 3 days ago

Great Product Support and Excellent Customer Service

My Anker power bank has been working fine until my recent travel several weeks ago. The fully charged power bank could only charge my cell phone for several minutes before it runs...Read more

Published 3 days ago

Mark D.

No good after 18 months

I bought this in November 2016 - it had worked fine for the first 18 months and now it is dead after 10 minutes.Read more

Published 3 days ago

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Anker Astro E1 5200mAh Candy bar-Sized Ultra Compact Portable Charger (External Battery Power Bank) with High-Speed Charging PowerIQ Technology (Black)

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