Received my battery a couple of days ago. Seems well constructed, and I love the digital readout. As Indianpoptart previously stated, battery takes about 3 hours to reach 100%. I also wanted to add something not previously known to me concerning this battery (wanted to know if it could charge a Macbook). I just purchased a 13” Macbook Pro with touch bar (2016 version) and wanted to see if this battery would charge it. Well, I am happy to report, it can charge my Macbook Pro via an Anker USB-C to USB-C cable. However, I did have to put my laptop into sleep mode (battery at 76%). After ~35 minutes, Macbook battery was at 87%. Confirming, the USB-C can function as a power source capable of charging a Macbook.