I received my J3 4 days ago and the first thing I did was connect via USB to my laptop to add a bunch of songs. Obviously it was charging during this time, but it only lasted for 10-15 minutes and then I decided to just start listening to music without waiting the recommended 3 hours (it was already full even before I charged it).
My friend who owns an S9 claimed that he did the same thing to his S9 and the battery wasn't as efficient as it was supposed to be (something like only 10 hours of music play before it dies). He said that it may already be too late for my player.
Is this true? I understand that Cowon uses Lithium-Polymer batteries, so I'm not sure why this would be the case.
Regardless, I have my J3 charging right now.
Just curious if I already ruin its battery.