You want to buy some good quality, high speed charging cables for this. The cables that come with it are not sufficient. I ordered a 2 pack of 3' foot Anker cables and the charging speed was better. I am happy with this but don't think it should be sold with the little cheap cables.

It does it job for the most part.

Does not charge fast but does hold charge

Es de plástico, pesa mucho

Very big and heavy

Charger works well. I purchased in fall 2017 & read many reviews/FAQ to see if I could take it on a commercial flight & didn't read anything about not taking it. So, I put it in my checked bag (figuring that was safer), & it was confiscated at the Frankfurt airport. So, FYI, don't put it in checked bags. Apparently, it is allowed on carry-on bags. Disappointed...loved the charger, but don't want to fork out $$ for another. Wish Anker would have provided this info in their FAQ or instructions provided with the device (for dummies like me who didn't do homework with the airlines!) :)

Died after only a few months of use. Worked great before it just stopped taking a charge.

Very heavy don’t like to even carry in my purse

Great battery. Really reliable.

Not so good