Just so you know, you don’t have to charge / discharge the cell fully to keep it in good shape.
You can partially charge from any point to any point and take out of the charger any time you need to,
as per convenience. (like a phone)
The batteries took a little over 5 hours to charge fully. I was just curious because every other battery I have ordered before came almost fully charged and never took this long. So far the battery is lasting pretty good. I put it in my device this morning around 4:30 and currently it is at 3.6 volts.