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Review of Yoobao Thunder 13000 mAh external battery w/pics!!!

This is a review of genuine Yoobao Thunder 13000 mAh external battery: http://www.kevikev.com/Yoobao-Thunder-13000mah-Power-Bank-for-USB-Mobile-Devices-YBTHUNDER13000.htm
With so many reviews behind my belt, this is a first time I'm specifically referring to a product as "genuine". Here is a reason why. Yoobao is a popular Chinese manufacturer specializing in cases and batteries, but it's not that well known in the States because there are only 2 US dealers with www.kevikev.com being the only one verified by Yoobao (I actually checked that on Yoobao website). I came across HK products that look identical to these, but was informed by their sellers those weren't real Yoobao, only lookalike. That obviously turned me away, until I got an opportunity to review the real Yoobao product with samples provided to me directly from kevikev online store.
External batteries continue to push their capacity while maintaining small footprint. This Thunder model goes all the way up to 13000 mAh with a dimensions of approximately 136 mm x 74 mm x 28 mm. Higher capacity also means more battery cells and increased weight, which in case of Thunder is about 300g. I wouldn't call it pocket friendly, but you have to trust me - this is a kind of battery you want everybody to see due to how cool it looks! Personally, I wouldn't even call it Thunder but rather something like Ninja Warrior! That's how it looks to me It has a very solid hard plastic material on the top and the bottom and two end sides, while around the grip sides it has a red rubber material stamped with snow flake pattern. The power/control button is in a shape of a warrior mask where the eye light up blue/red depending on it's charging cycle. Also, there are 5 hidden light elements around it to indicate charging capacity of the battery partitioned in 20% increments. This battery has 3 ports, one micro-usb battery charging input, and two full size usb device charging outputs. In addition, it comes with a very bright torch LED light. A very nice bonus if you are in the dark (like during power loss) and need an extra light source which can last you over 500 hours at full battery charge, or just a way to light up usb ports so you can connect your smart phone or tablet. Along with Thunder battery, you get a high quality usb to micro-usb cable. I actually like the rubbery texture of that cable, it has a premium feel to it. Also you get Apple 30-pin adapter, and to my surprise a premium quality wall charger rated at 1A. This way you can use a wall charger with included cable to charge up the battery, and then use the same cable to charge up your device. This external battery came already pre-charged to about 80%, and when I was charging it up to 100% I felt wall charger getting a little warm, but nothing to be alarmed.
Even so this external battery looks very cool, it doesn't matter if it can't deliver. So here is what I found while putting it through my test. Since it already came pre-charged, I didn't have a chance to time a total charge up time. But since input is rated at 1A, we are talking about 12-13hr from empty due to its 13000 mAh capacity. The manual which comes with a battery mentions that Output 1 is rated at 1A while output 2 is rated at 1.5A. From my test I was able to to confirm that both outputs provide 1.6A of charging current which is what I typically see from most of the 2A wall chargers. This is a very good indicator that you can charger your Note 2 fast from either of the ports and don't have to worry if you are plugged into Output 1 or Output 2. For my test I actually had my N2 with ZL9k3 battery down to single % digits, and let it charge overnight. Yes, the rated capacity is 13000 mAh but the actual capacity available to phone/table battery will be less due to efficiency loss of conversion through 5V usb port. That is a know fact and common to every single external battery. According to my calculation of charging time and N2 battery percentage change I determined the actual capacity of Thunder to be around 8800-9000 mAh, which is very good and on par with 30-35% efficiency loss expected from these high capacity external batteries. This is a very impressive number considering you can fully charge your Zerolemon battery with Thunder or charge your N2 almost 3 times with stock battery.
Overall, this is one Awesome battery in terms of looks and performance!!! It's not your usual rectangular brick you keep for emergency out of sight. Thunder is something you would want to keep on your desk as a center piece to show off. And the cool looks are backed by a solid built and a great performance of high capacity and fast charging of your device. What is more important, you are dealing with an authorized Yoobao US dealer who will honor its 6-month warranty and can service/replace the product if you need to. This one gets my recommendation!
Also, I want to mention that I'm working on getting you guys an exclusive 10% off coupon for purchase of this battery... Here you go, hot off the press: the coupon code is kk001. It should work with this battery or any other purchase total of $50.
Here are some pictures for your enjoyment. I tried to take the last few in the dark so you can see LEDs better:
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I wonder how it compares to Anker 1300mAh external charger

VitaliyUvakin said:
I wonder how it compares to Anker 1300mAh external charger
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You mean Anker E4 13000 mAh? Very good point. They are identical in spec, even with torch led light Anker is a few dollars cheaper (considering 10% discount you can get with Thunder), and you get longer warranty with Anker. But from visual perspective - Thunder is in a class of it's own. It's not a regular rectangular box, but rather a gadget with personality. The way how it's shaped, the quality of the case material and side grips, that warrior-mask power button with eyes that light up (either blue or red) and shapes of the little indicator lights around it - the Cool factor adds to it's value. Just my opinion, and please don't hate me if I persuade you to buy yet another gadget you weren't even planning to get

Lol. No hate here and you absolutely right, tunder looks very sexy and appealing.
Now I just need to find an excuse why I need it , which won't be an easy.... since I'm rocking ZL, which is powerfull beast on its own

Looks pretty cool! Just not a fan of the glossy finish

apallohadas said:
Looks pretty cool! Just not a fan of the glossy finish
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yep, forgot to mention it will be a fingerprint magnet. Well, at least you can trace it back and ID who touched your external battery

vectron said:
yep, forgot to mention it will be a fingerprint magnet. Well, at least you can trace it back and ID who touched your external battery
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I've been looking for an excuse to practice drawing prints off of batteries!

I'm selling this in Asia and i must say it's very popular. It's sold out the moment i gotten new stocks.

Max 1.5A seems to be a little slow at charging. Dig the design though.

IsolatedAbyss said:
Max 1.5A seems to be a little slow at charging. Dig the design though.
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I confirmed both ports charging at 1.6A, exactly the same as my oem Samsung 2A wall charger. So you are guaranteed to charge it as fast as from a wall charger.

Im on the fence between this boy and anker.. decisions, decisions...

VitaliyUvakin said:
Im on the fence between this boy and anker.. decisions, decisions...
Click to expand...
Click to collapse
There is also Yoobao 15,600 mAh battery for $59.99 and you can apply 10% off coupon to get a discount. That one is even higher capacity. http://www.kevikev.com/Yoobao-Thunderbolt-15600mah-Power-Bank-for-USB-Mobile-Devices-YBT-655.htm

Review of Anker Astro Pro 14400 mAh external battery w/pics!!!

This is a review of Anker Astro Pro 14400 mAh external battery: http://www.amazon.com/gp/product/B005NGLTZQ/
I think when you get into capacity of 14400 mAh you are no longer in external battery territory but rather "portable power bank" section. I have reviewed a number of different external batteries before, but this one offers something different. In addition to your standard usb outputs you also get a selectable 9V/12V DC output to power up your other devices.requiring voltage other than 5V.
Obviously with a higher capacity you will also see a heavier weight and bigger dimensions of the external battery. This Astro Pro clocks at about 385 grams and dimensions of 150 mm x 82 mm x 21 mm. It will not be pocket friendly, but surprisingly it still feels portable enough to throw into your backpack or just a bag on a go. As a matter of fact, the battery feels very rugged and solid, something that might give you a piece of mind when you are traveling. The whole body of the battery has a rubberized non slim finish, similar to Thinkpad laptops. The top has a reflective design which opens up to 4 vertical blue LED indicators (each one corresponding to 25% of battery capacity) and a power button.
The charging input comes from AC wall adapter which charges your battery relatively fast considering 12V/1.2A input. This is not your typical 5V input because this battery is designed to provide 12V/9V output in addition to 5V, so you need a higher voltage to begin with; 9V and 5V are derived from 12V internally. As I mentioned you can select either 12V or 9V DC output with a switch on a side. That output will provide 2A of output current. The same with both 5V USB outputs, each one will be able to supply 2A of current and can be used simultaneously. According to Anker, Output 1 is designated for Apple products and can charge even iPad 4 w/retina. Output 2 should be able to accommodate any Samsung tablet/phone or any other smart phone/tablet. For Note 2 - you can use either of the ports. For other smartphones or tables - you are covered with either one of these ports.
And speaking of full coverage. You get a lot of different connector types to cover most of your needs. The coiled heavy duty USB cable with it's selection of tips should cover most of the common micro-usb, mini-usb, apple, and cheaper tablets, while DC output cable has plenty of tips to cover laptop, netbook, camcoders, digital cameras, and other devices. Yes keep in mind - this will come VERY handy when you want to charge your Digital camera or DV recorder when you are outside and run out of juice. You also get a stretchable storage pouch which fits Astro Pro and cables. Keep in mind, 14400 mAh rating will have to be de-rated 30% down which is typical for EVERY external battery because of conversion through 5V usb connector going to your smartphone or other device.
Overall, if you are a looking for a more universal and versatile external battery to charge your phone and other digital devices (camera, dv, etc.) on the go - this will be a great solution to consolidate everything in one piece which is still portable. As usual, Anker offers 18-months warranty they really stand behind, a big plus!
Here are the pictures of this beast:
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pretty cool however i think the Astro E4 is better as it can charge faster and i realize this has two 2.0amp ports however for price over performance i think for 15$ less you can have slightly less mAh. I know this is aesthetically better but here you go
http://www.amazon.com/Anker-13000mA...F8&qid=1369337456&sr=8-1&keywords=anker+13000

Absolutely agree, if you are looking for smart phone only charger E4 is the best value right now. But in situation when you need more than just usb charging port - this one is great with it's extra 9V/12V output. I know most of the people abandon their regular cameras and digital video cameras in favor of phones, but we still use our dv camera at home and it needs 9V to charge it. So in that situation when you are running low on battery you can both charge the dv camera and phone on the go away from power outlet.

vectron said:
Absolutely agree, if you are looking for smart phone only charger E4 is the best value right now. But in situation when you need more than just usb charging port - this one is great with it's extra 9V/12V output. I know most of the people abandon their regular cameras and digital video cameras in favor of phones, but we still use our dv camera at home and it needs 9V to charge it. So in that situation when you are running low on battery you can both charge the dv camera and phone on the go away from power outlet.
Click to expand...
Click to collapse
I just use the battery charger from my camera. Its a nice product for some people I just see it as an over peiced option when youcan use something for less with an adapter if you felt like it is all.
Sent from my SPH-L900 using xda app-developers app

Review of Anker 2nd gen Astro Pro2 20000 mAh external battery w/lots of pics!!!

This is a review of Anker 2nd gen Astro Pro2 20000 mAh external battery. http://www.ianker.com/product/79AN7906-BA, and amazon link: http://www.amazon.com/gp/product/B005NGLTZQ/
In case if you thought I took a break from reviewing external batteries - I didn't. I was looking for something new and original, not another cookie-cutter re-branded battery. Funny how everytime I start my journey to find a cool new original battery product with a great value, I always end up coming back to yet another new release from Anker. As I mentioned so many times in the past, this company is working very hard to stay at the top of the game with new products and ideas. They switched to environmentally safe carton packaging (no plastic what so ever), updated to 2nd gen with more efficient modules having 80% efficiency in comparison to every other external battery out there with only 65%-70% efficiency, and introduced 10-led capacity indicators with their 2nd gen Astro modules. So where do you go from there? - 2nd gen Astro Pro2 with a whooping 20000 mAh (that's 20k mAh) capacity.
As I mentioned above, the battery arrived in Anker's new standard all carton packaging which is environmentally safe and no-hassle to open. Being a super high capacity, don't expect a lightweight portable module. I have seen a lot of other cheap 20000 mAh batteries in the past, all in a lightweight small footprint. That would be the first red flag to claim a high capacity without a "weight" behind it Astro Pro2 is about 6.5" x 4.5" x 0.6" and weight of 488 g. It's not pocket friendly, but with included drawstring storage pouch and considering relatively slim profile - it would make a great travel companion in your briefcase or luggage. The case is very durable all metal with a brushed aluminum black finish which I found to be scratch resistant. Other accessories include usb to micro-usb cable, tablet charging cable (for Asus and Acer tablets with 5.5mm x 2.1mm jack), and AC outlet charging cable. With such high capacity charging this battery from usb charger will take a very long time, so the charging is done from 12V/2A wall charger where you can get full charge from zero in under 6 hours.
Once you start charging you will notice something that is extremely rare for external batteries - a back lit LCD display with actual % indicator number in 1% increments. There is no guessing with 4 leds or even 10 leds, you will know exactly the charging capacity and when using this battery - the exact remaining battery capacity. This capacity could be checked at any point by pushing multi-function button on the side of the battery. Also, when you hold this button down for 3sec, you will see a flashing 9V or 12V which can be selected with the same button. To accommodate some of the common Acer and Asus tablets with 5.5mm x 2.1mm jack, you can use included cable attached to DC Output port where you get 9V / 2A or 12V / 1.5A output. If you have some other tablet or camera or another gadget that require 9V or 12V voltage and uses a unique charging tip, you can get for $10 a collection of 28 different tips like these: http://www.amazon.com/Vktech-Universal-5-5x2-1mm-Adapter-Notebook/dp/B00CMMO6AE/
But the stars of this external battery are 3x smart usb outputs, each being able to supply up to 2.4A. When all ports are connected, you can't exceed the maximum 4.5A current, but still it's very impressive considering you could be charging 3 separate devices at high speed from such a high capacity source. Also, the charging starts automatically once you plug in the cable. 20000 mAh is obviously the max capacity of the internal battery, but as you know it's typically 3.7V which has to be converted to 5V usb interface where the efficiency of Astro Pro2 is only 80% of the actual capacity, 16000 mAh. This is VERY impressive because today most of the external batteries on the market have actual capacity which is only 2/3 of the max advertised one.
Overall, I found this battery to be of a VERY high quality with a tough attractive built, multi-port smart charging capability including flexibility of 9V/12V charging, 1% increment charge/capacity LCD indicator, and one of the best warranty coverages with 18-months of support. Considering all that and enormous capacity of 20000 mAh with 80% efficiency, the price of $79.99 is actually a bargain for such product.
Here are the pictures.
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Great review as always!!! I'm thinking about returning my zerolemon and pick up 1 of these
Sent from my SCH-I605 using xda app-developers app

Ordered the Anker 2nd gen Astro 3 12000mAH. Will get it Wednesday and give my review.... Stay tuned! bTW don't buy or use the zerolemon battery case for the N4 it week fry your battery!!!!
Sent from my Nexus 4 using xda app-developers app

where did you order your Pro2 from? i cant find it anywhere!!

Squeeker the Cat said:
where did you order your Pro2 from? i cant find it anywhere!!
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I knew these will be sold out, so I included Amazon link in the original review as well (http://www.amazon.com/gp/product/B005NGLTZQ/). As you can see it's currently unavailable because they out of stock. Keep checking or just email them directly to find out when it's back in stock.

Is there any site or shop selling it to Europe? I can only find the first gen on Amazon UK.

Video Review
Great review, like always!
Here's a video review if someone is interested:
https://www.youtube.com/watch?v=W84Xm4YzMIU

Much thanks!
The only place I could find any reference to requiring other adaptors for the DC part. At least I know now.

I have a vzw note 3. I would like to buy a portable charger small enough to carry in my pocket and provide 1 full charge so probably need 5000 mah unit. I want safety, quality, and portability. I prefer something containing quality brand battery like Samsung or Panasonic/Sanyo and I don't want to worry about a power surge frying my phone. I prefer a product available from a USA dealer.
Suggestions?

recDNA said:
I have a vzw note 3. I would like to buy a portable charger small enough to carry in my pocket and provide 1 full charge so probably need 5000 mah unit. I want safety, quality, and portability. I prefer something containing quality brand battery like Samsung or Panasonic/Sanyo and I don't want to worry about a power surge frying my phone. I prefer a product available from a USA dealer.
Suggestions?
Click to expand...
Click to collapse
Just search for other Anker batteries, find the size and the capacity you need and go for it!

vectron said:
Just search for other Anker batteries, find the size and the capacity you need and go for it!
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A lot of users report units break after 3 or 4 months.

recDNA said:
A lot of users report units break after 3 or 4 months.
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This is 2+ year old product, and wasn't even an original Anker design, if I'm not mistaken. Most of their stuff in the last 1-2 years has been original. But either way, Pro 2 has 1200 reviews on Amazon with 91% 4-5 Star reviews, and another 4% of 3-stars just have critical comments about performance.
I can tell you with certainty since I review a lot of products from many different manufacturers - most of the 1-2 star reviews are fake and written by competitors.

Review of Anker 40W 5-port USB wall charger w/lots of pics!!!

This is a review of Anker 40W 5-port USB wall charger. http://www.ianker.com/product/71AN7105-BA
Anker guys never cease to amaze me. Just when I think I know what to expect, here comes another surprise. I just received their new 5-port usb wall charger, and was thinking to myself it's probably the same as my previously reviewed 25W 5-port charger, just 3A of additional current. But was I in for a big and pleasant surprise! That original 25W 5-port charger became my irreplaceable everyday accessory with access to charge 5 separate usb devices from a single compact charger plugged to one wall outlet. The new 40W is a big step up, and here is why.
Typical for all the latest Anker products arriving in eco-friendly packaging, the box is also made out of recycled carton with a zero hint of plastic. Upon opening it up, you are presented with a small usb charger and a 5ft detachable cable. When I say small charger, I really mean the size of most common single usb output 1A chargers. With a dimensions of 3.6" x 2.3" x 1" and weight of only 4.6oz this charger is even smaller and more compact than original 25W charger, something I didn't expect considering this new charger is 40W (8A) rated versus 25W (5A). Don't get me wrong, the original 25W charger is still a fantastic product, but they just made it obsolete by releasing a higher capacity the same 5-port charger in a more compact package. Furthermore, the exterior is now wrapped in a soft touch material, similar to their 2nd gen Astro external batteries. It's less slippery, less prone to fingerprints, and feels a lot more rugged especially when you take it with you on a trip.
Upon further examination, the next big change is ALL 5 ports being universal without any apple/android/ipad/samsung labeling. The original 25W version was partitioned with ports for specific devices. Sure it was a good idea, but it required constant close up reading when plugging my other than Samsung (Note 2 is universal with any output) gadgets. What does this mean? Every port is universal with a smart feature and its own microchip to determine max charging speed of the connected device to adjust current supply accordingly, even for the latest iPad with 2.4A. Basically you can have 5 separate devices plugged in and each one will have a tailored current supply adjustment for a total that can't exceed 8A. So unless you are planning to plug in 5 latest iPads, you are in a pretty good shape with more than enough of current supply. For my test, I actually had my Note 2 plugged in by itself to confirm average charging of 1.7A, and then plugged in 3x Nexus 7 tablets (two 2012 and one 2013 edition), and the current draw on my Note 2 stayed the same while Nexus tablets were charging at their corresponding 1A/1.5A speed.
Overall, at the current moment you will not find anything even remotely as advanced as this new 40W 5-port USB wall charger which can power up 5 separate gadgets (a mix of Android, Apple, and any smartwatch, headphones, mp3 player, etc.) and provide a combined 8A of regulated and smart adjusted supply for all it's ports. With such a compact package, 18-months warranty, and for only $25 plus change - I consider this as a MUST HAVE accessory for anybody. Period.
Here are the pictures (the white one is the original 25W charger, for comparison).
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I updated the link in the review with the one directly from Anker. I have been told those were sold out in the first few days and now they are waiting to get more in stock. So better use direct Anker link since out-of-stock amazon link doesn't show up.

Was finally able to grab one this morning on Amazon. Definitely a hot seller!
Sent from my Nexus 7 using Tapatalk

I don't label a lot of accessories as "must have", but this one definitely deserves that

This thing works great! Successfully charged an HTC One, a Moto X, a Razr M, an iPad 3, and a Nexus 7 (2013) simultaneously at full speed. Thumbs up! ?
Sent from my Nexus 7 using Tapatalk

Not getting full speed
My Anker 40W, isnt giving me full speed when i compared it with the original charger that came with my tablet. Just wondering anyone getting similar results? See original post
Original post
http://forum.xda-developers.com/showpost.php?p=50662359&postcount=8

Underpowered
Frozster said:
My Anker 40W, isnt giving me full speed when i compared it with the original charger that came with my tablet. Just wondering anyone getting similar results? See original post
Original post
http://forum.xda-developers.com/showpost.php?p=50662359&postcount=8
Click to expand...
Click to collapse
You're right, I tested the 60W it was underpowered as well.
http://forum.xda-developers.com/showpost.php?p=58946496&postcount=2

Cool! Definitely a must have!
I had current issues before...I found out it was the cable. I know it could be obvious but most of us think "hey, this cable looks good, should work good too"
By the way. I think Kingston's Data Traveler microDuo 3.0 is a must have too. Sorry, i can't post link yet.

[REVIEW] Anker Astro Mini 3200mAh External Battery

This is a review of the Anker Astro Mini 3200mAh External Battery. The product's official page can be found here. It is for sale in the US on Amazon.com and is currently $19.99 with a list price of $39.99.
Before I get started, I was provided a sample by Anker and asked to give my unbiased thoughts on the product. You should know that I absolutely love Anker products, but that does not mean I am going to love everything they make.
I also own 3x of the Anker E5 16000mAh External Batteries, their E1 5200mAh External Battery, and some of their other 5x and 2x port USB wall chargers. I have also owned external batteries from other manufacturer's as well.
For my testing, I tested throughout the week with my Samsung Galaxy S 4 phone with the stock OEM battery. I currently have OmniROM Nightlies on it, and while it is good on battery life, stock ROMs may have different results.
The product box is a cute 4.25"x4.5"x2.5" cube. As with most if not all Anker products, the box is lightweight cardboard with a paper slip cover.
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Some other unboxing and size comparison photos below:
As with most Anker products I have unboxed, the feeling I get with their products even before using the actual product is that the packaging is very well designed and thought out. Their graphics design team has a great eye for presenting their product with integrity. I really enjoy the documentation they include, which includes a simple card with contact/support info if you aren't happy with the product, as well as social media links suggesting you follow them and review their product on Amazon. With tons of similar products on the market, it is often these little things that keep consumers (including me) coming back for more. In fact, if you read the product features, one of them is "friendly customer service". The warranty on this product is 18 months, which is great for such an inexpensive battery.
The unit feels very well made. It doesn't feel like there is any wasted space. I was provided a gold colored sample and print is all white, which is hard to read. I can't tell if the print is laser etched or a light silk screen. That said, it is probably more attractive than big, bold black text on the unit. At 80g / 2.8oz, this thing is light!
The included mesh bag is similar to those that other Anker products include, but it measures 5"x2.5", which seems large on this tiny battery. It looks like this bag was designed for another product but included with this one. In fact, it appears to be the perfect size and shape for my Anker E1 5200 mAh battery that didn't include a mesh bag. These bags are great because it gives you a way to store the cable with the battery without leaving the cable plugged in, potentially damaging the cable and port while in your bag or pocket. The included cable is white and is approximately 28" in length. One thought I had is that if this battery is marketed to iPhone and Android users alike, why is only a micro USB cable included? Granted, it is certainly cheaper than an Apple Lightning cable, but keep in mind that the product page only shows an iPhone with a cable plugged in, so that could be misleading.
I generally use external batteries of at least 5,000 mAh. Given the Galaxy S 4 internal battery is 2600mAh, if I'm on the go for a day and really active on the phone using GPS, Internet, music, etc, I'm always afraid these little chargers aren't going to last me very long. That said I put this in my pocket for the day and made myself use it exclusively. The first time I used it, I'll admit, I did not charge it first. I wanted to see how it would behave and how I would react to not knowing how much charge was left in it. The unit has one LED and one button. There is no gauge for capacity remaining other than the LED will flash twice if the charge is less than 2%. Not much of a warning here. So on the first discharge from the unit, I got about 45 minutes until the battery just shut off. And that was it... as expected. With other batteries that feature gauges, there is often a 4-5 segment meter indicating percentage ranges of capacity left. This is a feature that is hugely missing from this little 3200mAh charger, but given it's compact size, it is completely understandable. On this battery, once you plug in your device, you do need to press the button on the battery to turn it on and begin charging. An auto-current detect would be nice so you don't forget to press the power button and end up not charging at all.
I charged the unit using the Anker 20W Dual USB Wall Charger. I first attempted the charge through a PLX Devices Legion USB Meter to measure the charge current. This will vary between wall chargers and even the current draw from the battery. I tried this with the Anker charger and my Samsung Galaxy S 4 OEM Charger (2A) and got the same 0.85A-0.90A charge rate. The documentation says input current is 0.8A max, so getting 0.9A is a nice surprise. At 0.8A charge, and if the battery was drained to 3,000mA, we can expect a full charge to take approximately 4.5 hours.
After my first full charge, I measured charge current output to other devices. I charged my Galaxy S 4 with 50% battery left, and also tried charging an Anker E5 16000 mAh battery just for kicks. On the Legion Meter, I saw anywhere from 0.6A to 0.97A.
The specifications for this battery state it is capable of 1A max charge. This is where we get into the question, "Is this product right for my device?" It does have Anker's PowerIQ technology with claims to deliver the most efficient charge for your device. That said, my Galaxy S 4 ships with a 2A charger, and I can verify that it WILL charge at up to 2A. So, comparing this battery with a wall charger just isn't fair because, it won't charge your device nearly as fast. I noticed this while using it throughout the week too. If the phone is under heavy CPU load, the phone very well may drain faster than it can charge. However, I during testing I used the phone moderately and can say that the phone DID reach 100% charge without a problem.
Browsing Amazon.com, I noticed that RAVPower has a nearly identical device with almost the exact size, color options, and features. The differences I noticed include the RAVPower has a flashlight on the end, the warranty is only 12 months, and a travel pouch is not listed as included. The RAVPower unit is also $17.99 at the time of this writing. That said, I do not know if Anker and RAVPower are in any way affiliated with each other since these are nearly the same, and even their websites look nearly identical. Both only sell on Amazon as well. The Anker model is available in other countries whereas the RAVPower seems only available in the USA.
I know some consumers would prefer this "lipstick" style charger. It will fit nearly anywhere. However, I do not see the appeal other than size, shape, and color to choose this over the Astro E1 battery, which has 60% more capacity, a 4-segment LED showing capacity remaining, and charges at 2A current instead of only 1A. Both are currently $19.99 on Amazon.com as of this writing. If you want functionality, I'd go with the Astro E1. If you need tiny or a colorful unit, perhaps this 3200 mAh lipstick battery is for you.
I will continue to use this battery as another backup, and even hand it off to my girlfriend for some thoughts. I'll update this post with new information as I gather it. If anyone has any questions, please don't hesitate to ask.