Follow your supplier/manufacturer's instructions for initial charging (if they are provided) for warranty purposes.
There are so many write ups and opinions on this matter its confusing for newbs.
Myself, I follow the instructions. If there aren't any, I do an initial charge of 6 hours, followed by 20 mins use, then a another 1 hour charge (regardly of charger light color). Subsequent charges until the charger light turns green.
As I said, this is what I've done "MYSELF", and don't really care about the opinions of those who choose to shoot it down because........ it has worked for me EVERY time, and my
batteries have been hassle free.
VapeOn,
Greg