Anker Astro E4 13000mAh External Battery Pack Portable Power Bank Charger for iPhone 5, 4S, 4, iPad 4, 3, 2, Mini, iPods; Samsung Galaxy S4, S3, S2, Note 2; HTC One, EVO, Thunderbolt, Incredible, Droid DNA; Motorola ATRIX, Droid; Google Nexus 4, Nexus 7, Nexus 10; LG Optimus [Lightning Adapter not included for iPhone 5] [3 mobile phone connectors] – Black

If what you’re looking for is capacity, the Anker® Astro E4 is the external battery for you. Designed with flights, road trips, and other extended periods of travel in mind, all that’s left for you to do is sit back and enjoy.

Enough power to go around
Marooned? In transit? Forget your OEM adapter? With the Anker® Astro E4, prolong your battery life multiple times, wherever you are. Holds enough capacity to charge most normal smartphones 6-7 cycles as well as an iPad 3 /4 up to 80%. Whether you’re planning on going days away from an outlet or simply sharing with friends, allow the most powerful option in the Anker® mobile lineup to get you there in style.

Strong but never slow
Not only does the Anker® Astro E4 boast enormous capacity, it sports two concurrent, high-speed ports as well. Whether you’re charging an iPad, iPhone, or Android-powered device, you’ll get the most out of your technology. We’ve included 3 connective adapters for use with any USB cable to ensure the highest level of compatibility possible.

Designed around the details
Just because the E4 packs a punch, doesn’t mean it can’t look nice. We went with a smooth, ivory varnish to keep you traveling in style. Simple, unobtrusive features, such as one-touch status LEDs and a built-in flashlight between the ports, give you everything you need out of a battery without any sacrifice to aesthetics.

Popular Compatible Models:
Apple: iPhone 5 4s 4 3g / iPad 4 (Retina display) 3 2 1 / iPad Mini (Use with your original Apple Lightning to USB cable)
Samsung: Samsung Galaxy S4 S3 S2 / Note II
Google: Nexus 7 10
HTC: One X, S, V / Sensation / Inspire / Droid / ThunderBolt / EVO / Radar
Amazon: Kindle / Kindle Fire
Motorola: Droid Razr Maxx
Sony: Sony Xperia…

Product Features

  • Monster capacity (13000mAh) delivers 6+ charges to most smartphones or 80% of a full cycle to iPad 3 / 4. In terms of power, this is the biggest, baddest battery in the Anker® mobile line.
  • Dual USB ports (5V 2A / 5V 1A) allow for simultaneous charging of your iPad, iPhone, Android, and more at high speed.
  • Premium lithium-ion battery ensures quality, supplying 500+ recharge cycles over a lifetime.
  • Smooth, ivory varnish allows you to power up in style, while 4 status LEDs keep you informed of remaining capacity. Built-in flashlight for dark or low-light environments.
  • Package includes: 1 Anker® Astro E4 External Battery, 3 connective adapters for smartphones, 1 USB cable, instruction manual.

  • jjceo says:

    This is an extremely powerful battery pack with above average performance in charging your devices! This battery pack is beautifully packaged with white case with a silver band around it. It is a powerful battery pack rated at 13,000 mAh of capacity and capable of charging two devices simultaneously. I put together a video of the unit and the test results for your review.The white exterior shell looks fantastic and does not show fingerprints. The battery weighs in at 10 5/8 ounces. The battery pack has two USB output ports that output 5 VDC at 1 Amp and the second one outputs 5 VDC at 2 Amps. This is ideal to allow you to charge two devices at the same time and one of them can be a tablet.During the testing the temperature of the battery pack never even exceeded ambient room temperature. To start your device charging you connect it with the proper cable and press the battery pack’s power button and charging starts. The charging will stop automatically when your device is fully charged or the battery pack is depleted.This battery pack also features a LED flashlight built in that can stay on for up to 600 hours when the battery is fully charged. This is ideal for when you travel to have an emergency light in a hotel room, when looking for your keys or when in a dark movie theater.This product is very good and I rate it at 5 stars. I was able to get 75.5% of the battery’s rated capacity out of it in my testing and that is very good. If you are a business person or a student and have to depend on your tablet or smart phone for long periods of time without the ability to get to an AC power source then this is a good battery to own. This is good for those who travel a lot or camp out. Now you can watch your movies or listen to your music on those long airline flights.You should note that I did not operate my devices while I charged them but the iPhones were on, connected to the wireless supplier’s towers and in all cases the devices WIFI was active.Items in the box:* The Anker 13000 mAh battery* The battery pack comes with an instruction manual* A USB to round pin charging cable that is 27 inches long* Three different phone adapters* It does not come with an AC wall charging adapter.Anker Astro E4 13000mAh External Battery Charger Features:* There are two USB power output ports and they are USB 1 rated at 5VDC at 1 Amp, USB 2 rated at 5VDC at 2 Amp for iPads and tablets.* Press the ON button when you plug in a device and that begins the charging process of your device. There is an automatic OFF when your electronic device is charged.* The battery pack uses Lithium-Polymer battery technology* The battery pack can be recharged 500+ times* Warranty is 18 months* Powerful 13000 mAh capacity* The unit is compact and weighs in at 10 5/8 ounces.* Attractive design with nice white exterior and surrounding silver band* It has 4blue LED status lights located on the side that indicate the battery charge level. One LED flashing means 0 to 5%, one LED on and the second one flashing means 5 to 25%, two LEDs on and the third flashing means 25 to 50%, three LEDs on and the fourth blinking means 50 to 75% four LEDs on means 75 to 100%..* When pressing the power button or charging a device the LEDs light showing the amount of power still stored in the battery pack.* The battery pack does not come with an AC wall charger.* Charging it with a USB 2.0 port on your laptop or computer is not recommended by me as the battery would take too long to fully charge. (Approximately 26+ hours with a 500 mAh USB 2.0 Port.)* It will take 13+ hours minimum to charge the battery pack with a 5 VDC USB rated at 1 Amp.* The battery pack can output 3 Amps max at one time so it can charge two devices simultaneously.* The unit has a LED flashlight that can be turned on by quickly double pressing the power switch. It can be on for up to 600 hours continuously. You turn it off by double pressing the power switch again.Charging my devices:I charged the battery pack fully before I started my test. I started with an iPad 2 at 5 % and the Anker 13000 battery fully charged and at 4 LEDs.* 30 min 19% 4 LEDs* 60 min 33% 4 LEDs* 90 min 47% 3 LEDs* 120 min 61% 2 LEDs* 150 min 75% 2 LEDs* 180 min 86% 2 LEDs* 210 min 92% 2 LEDs* 240 min 100% 2 LEDsStart iPhone 4 at 10 % and the Anker 13000 battery at 2 LEDs.* 30 min 43% 2 LEDs* 60 min 75% 2 LEDs* 90 min 89% 2 LEDs* 120 min 95% 2 LEDs* 150 min 100% 2 LEDsStart a second iPhone 4 at 19 % and the Anker 13000 battery at 2 LEDs.* 30 min 50% 1 LEDs* 60 min 78% 1 LEDs* 90 min 89% 1 LEDs* 120 min 100% 1 LEDsStart a Kindle Fire at 28 % and the Anker 13000 battery at 1 LEDs.* 30 min 46% on the Kindle Fire and the battery pack…

  • Joseph Siu says:

    Slick Looking External Power for Every Mobile Need Since Anker gave me this product in exchange for my honest feedback and review, I decided to take the Astro E4 power bank through its paces to see how it performs. I was quite pleased with the results; this is one solid external battery. Details below.The battery came in a nice-looking box along with a carrying pouch and an interchangeable-head USB cable; the cable came with three adapter heads: Micro-USB, Mini-USB, and iPhone/iPad (30-pin). The power bank itself has a smooth, black plastic shells and is quite elegant-looking with its chrome button and silver-colored frame. The unit has 4 bright, blue LED lights that reveals roughly how much battery life is left. The Astro E4 is somewhat heavy, but it is expect of a power bank of this large a capacity; the best way I could describe it is probably holding 2-3 rolls of quarters in your hand (not bad, right?). Due to its size and weight, this external battery is a perfect companion for your day-pack (messenger bag, backpack, purse, etc.)In terms of real-life performance, I ran tests using an iPad 2 and a Google LG Nexus 4, on multiple charge cycles. After charging the power bank to its fullest, I was able to get around 9200 mAh out of the the unit, which is around 71% of the stated capacity. Almost all external batteries perform below stated capacity, and some by a lot, so getting this amount of juice out of the Astro E4 is pretty decent. It is important to note that the charging devices were left on and drawing power for Wifi and cell signal; the actual capacity is probably even higher.To wrap up, here are my pros and cons:PROS:- Great design: nice size, weight, look, and feel- Large capacity: this thing will charge a powerful tablet once and a cellphone multiple times- Dual USB ports: can charge two devices at once- 2A output: one of the USB port outputs 2A which comes in really handy as most tablets and now some phones require this to get max charge speed- LED flashlight: energy-efficient LED flashlight allows the battery to double-duty as a flashlight, even when there very little charge left- One-button simplicity: seriously easy to figure out with only one button to push for turning on and charging- Auto-off: unit shuts off automatically after timed duration when it senses that there is nothing drawing powerCONS:- Adapter heads: interchangeable adapter heads tend to get loss after a while, making the included USB cable useless- BYOACC: Bring-Your-Own-A/C-Adapter may cause frustration for some as one is not included- Misleading LED indicator: even on very low battery level, the unit will still show one light; showing none would be better- Purple hue to flashlight: this might be just my unit, but the flashlight has a heavy purple/blue hue to it and not as white (or bright) as expectedFinal verdict is a 4-star from me, which means if you’re in the market for a powerful battery back, buy this thing as you probably will be hard pressed to find a better one with this quality/price balance. I reserve 5-stars for products that is perfect in my book and I love using. This one is nearly there but did leave me with some slight frustration at the misleading charging indicator, the missing A/C adapter, and the dimmer purple flashlight.