Bests & Worsts Reviews from Amazon

#1 It does not charge my phone rapidly - takes hours to charge. The indication about smart charging made me feel it did rapid charging. #2 It does not complete the charging of my battery pack. For some reason battery packs (esp Ubiolabs sold by Costco) shows as charging forever. All other chargers stop the charging indicator in the battery pack when it is fully charged. #3 This is the most serious flaw. I bought this for travel (also international travel). The power button switched to off when there is a brief power outage. This is a painful thing. You put the phone on charge the night and next day morning you find that the phone is not charged since it switched off on a brief power outage happened in the night. Due to these flaws, I cannot recommend this product. I am thinking of returning this. I hope I did not trash the original package.