Pros: One full charge (4 LED light on) can full recharge iPhone couple times.

Cons: compare to others this product more heavy, and the full charge time about 30 hours (wait for all 4 LED on).

Other Thoughts: it also include LED flash light function.

Pros: Works much better than expected, charged my smart phone 3 times before the first light went out, ( all 4 lights being lit), everyone on the job wants to know where i got it. i told them. i even purchased a carry case for it so i can wear it on my belt like my cellphone.

Cons: none that i can see.

Pros: Charges fast. Holds charge long time. I charged 2Xiphones, 2Xipads, some other smart phones etc throughout my vacation and didn't fail whatsoever.

Cons: Heavy and a bit bulky. It dinged my shoulder when I ha this battery back and a bottle of water in my purse.

Pros: dual port, percentage indicator, flash light

Cons: no charger included

Other Thoughts: this is the best battery back up I've ever purchased. although it takes a very long time to charge, i was able to keep my two phones and tablet charged up for a full weekend without the worries of needing a wall outlet. I'm a happy camper.

Pros: I decided to test the charger and see exactly how long it would last with my cellphone. It's always good to know these things especially when travelling.

With every feature turned on including wireless, bluetooth and GPS, it lasted over 3 1/2 days. Which in my opinion is awesome.

Cons: None yet

Other Thoughts: The flashlight is a nice feature but I don't see me ever using it.

Pros: Has a large capacity

Cons: The 4-light system that indicates battery level.

Other Thoughts: On larger battery packs (such as this one), I don't think a 4-light charge indicator is detailed enough. If a person could use the full 20000mAh (aka 100% efficiency), then each light would represent 5000mAh. Maybe future models could use 8 lights instead of 4?

That being said, it's not really too big of a concern with a battery as large as this one. If it has at least 2-lights showing, it will probably fully charge your tablet, and it will definitely fully charge your phone. It charged an iPad Air from 5% to full, with 2 lights remaining on the charge. I'll just assume that there is enough charge left to fill the iPad to 50%.

It can charge an iPad @ ~1.6A while the iPad is being used.

All in all, this is a nice, large-capacity battery pack that costs about the same as lower capacity batteries. It works great for me, and I definitely recommend it! Thanks for reading :)

Pros: Wow capacity, will charge or drive any 5 volt devices you have.
In addition to everyday use, the standby/emergency ability is nice. Holds charge well. Well made, simply marked and operated. Charge indicators integrated (concealed) in plastic case..

Cons: None

Other Thoughts: Can and will charge faster with 2.0+Amp chargers.
Unit weighs one pound, similar weight ratio as lower wattage units. Nice design, comfortable to handle.

Pros: Does what it's supposed to do.
It's simple
Large Capacity

Cons: Doesn't include a charging cable nor a perfectly matched 2.1 Amp charger supply. Knock off one star for that. Not such a big deal.

Other Thoughts: All in all, a good deal at the $27 or so price, given the large capacity of this supply.
Complaints about it taking a long time for it to charge up are incorrect: if your charger supply is less than the power bank's 2.1 Amp capacity, then it WILL charge up more slowly, but at 2.1 amps it seems to me to charge reasonably quickly.

Pros: The charger has charged my cell phone and iPad with no problems. I was able to charge my cell phone 3 times (Galaxy 4) and my iPad once before I had to recharge this unit.

Cons: Surprisingly heavy. I didn't expect the charger to weigh this much. It is more than I would want to carry around with me all day in a pocket. I guess that is what wives purses were made for... LOL Also, it takes a LOT more than the stated 10 hours to recharge the charger. I like to run the battery all the way down, then recharge. It took well over 16 or so hours to fully charge the unit back up. The wall socket adapter also got quite warm during this process. I used both an Apple and a Samsung wall socket adapter, and they both reacted the same way.

Other Thoughts: All in all, it is nice knowing that I have several phone charges available to me when there is no electrical outlet in sight. Well worth the $26.00 or so that I spent. Newegg was, as usual, AWESOME in getting the product shipped to me FAST. I have been doing business with Newegg for years, and will continue to do so... HIGHLY RECOMMENDED...