Power Walker EnerKing Rechargeable USB Power Bank K12500 - 12500mAh/1A & 2.1A Dual Output/ Max Total 3.1A Output (Black) Power Walker EnerKing Rechargeable USB Power Bank - 12500mAh High Capacity, 1A & 2.1A Dual Output, and Max Total 3.1A Output Current Power Walker EnerKing Rechargeable USB Power Bank - 12500mAh High Capacity, 1A & 2.1A Dual Output, and Max Total 3.1A Output Current

Pros: more power for price 2 usb ports its 12500mah

Cons: not really a con but its size is on the large side it is almost the same size as a Samsung note phone

Pros: Powerful, long lasting battery

Cons: a bit hot when it charges my iPad 4

Pros: 12500 mAh thats alot of juice I charged mine and my wife's S3 to 100% at the same time. did not take long at all.

Cons: will not charge my Asus Transformer tablet it needs 15v in and this power pack only outputs 5V on both ports one at 2a and the other at 3a. it says it can charge tablets. I am sure with my tablet off it might trickle charge it. I might be able to go 2USB to one and make it 10v and it might work enough for the plane trips.

Pros: 12,500mah Wow! This battery will charge my Samsung Galaxy S3 fully, and still have lots of power left over for a second or third charge.

Cons: My unit was purchased 02/17/2013, and on 04/20/2013 my "DC IN" port was loose. Sadly 04/21/2013 it broke and is now rattling inside the unit (Dont know if it was workmanship or something I did). Yes...that means I can not charge my unit any more :-( . In the process of trying to contacting Powerex....it is under warranty.

Pros: 12,500 mAh of power. Great for long plane rides where there's no place to recharge your iPad/iPhone.

Cons: None so far.

Other Thoughts: I got lucky on this one. Got it when it was on sale for only $40. Very handy gadget.

Pros: None.

Cons: DOA. I wish it worked.

Pros: So as other reviewers have stated this thing is pretty dam beefy. I charged one up and have placed it in the center console of my care with a line out. (my car charger is broken) I have been recharging my Note 2 phone for a couple days and its still got alot of juice left so once it runs low i will swapp it with the second brick and rechage this one up.

Cons: I didnt pay attention to the dimensions of this thing and was expecting something a bit smaller more pocket friendly. However this is mostly my own fault for not paying attention to that small detail.

Other Thoughts: Overall i am pretty happy with these units. Hopefully they will last me a couple years in the rotation i plan to use them in.

Pros: WOW! 12,500mAh! WOW!

Cons: Not really a CON for me...But yeah it's kind of big (I keep it in my SwissGear bag) , but its size makes up for what it is CAPABLE of doing.

Other Thoughts: Keeps my Samsung Galaxy S3 going. Yeah Mugen Power Batteries has an extended battery for the Galaxy S3, but no protective case....not really feeling the product from Sedio.

Pros: Works great for charging my ipad, iphones, and my other usb charged devices. Plus I got it for $39.00. Came with plenty of extra adapters and 2 usb cables.

Cons: It says 12500mAh so I would think I would get more charges on my iphone than I do. Thats why gave it 4 eggs instead of 5. It does do a good job for the price though.

Pros: By far, one of the most powerful external battery packs available today. This thing is a MONSTER! It will charge an iPad & phone at the same time, multiple times (depending on how drained the devices were). Simple to use: hardware on/off switch with three power-level indicator lights. Comes with adapter cords to charge mini & micro USB devices.

Cons: Heavy and large-- not exactly "pocket-sized." Takes 12 hours to fill it up. Doesn't come with an AC Adapter. The directions claim you can charge it from your laptop, but it needs at least 2 Amps IN to charge, so many laptop USB plugs won't be able to fully charge it. Would be best to charge from an iPad or other TABLET AC Adapter/Charger.

Other Thoughts: If you wear a coat with a large breast pocket, this battery may be able to provide you bullet-proof heart protection!