This Poweradd Pilot 2GS, 10,000 mAPH battery is the real deal! It is a very affordable while nice option. Yes it takes a bit to charge but it likewise takes quite a bit to drain it as well.10,000mAh capacity is able provide 4 solid charges to an iPhone 6s, or at least 2.5 charges to a Galaxy S6, or 1 and a half charges for an iPad Mini. It works with anything that charges with an USB cord and it gets the job done pretty well. Such aa power bank!