I've charged my Evic 1 time already for the full amount time (6 hrs) but when I charged it I made sure that the battery was completely dead !! I was told that it's not good to charge any battery unless it's completely dead or you will mess up the cells in the battery you will kill or wear out battery before it's time . I would take your Evic back get your money and go somewhere else this is the second mod you got from there and having problems with in days of having it!!! I would say if you had it charging for 6 hrs and that's what you saw after charging ? No that's not normal !!! TAKE IT BACK !!! I'm somewhat a newbie to vaping myself I've been smoke free for 7 months now !! Every day I learn something new! I rarely buy anything from vape shops I mostly buy on line,(mods,tanks,coils,etc) it's cheaper and you do find deals and coupons . I buy my juices from a friend who makes them . Some day I will learn to make my own. The places I've had no problems with on line buying from is VaperDNA where I've bought my mods and tanks,coils (when on sale) and if you search for on line coupons there out there, and there the ones who gave me the $45.00 back after 4 months so that says something good about them. Sun vapers is good for cheap coils and there authentic!
Certain types of batteries like Nimh do need to be discharged completely.
Limn Batteries are the opposite. Over Discharging damages the battery and will make the length of time that the battery holds a charge shorter. Evic is regulated and protects against over discharge.
The way I've seen it explained.
Let's say that an LIMN battery has 300 full charges before it loses 10-20% battery life.
You can fully discharge it 300 times. If you 1/2 discharge it then you get 600 charges. 1/4 discharge 1200 times.
The wild card is that fully discharging is harder on the battery and causes shortened battery life. I like to change my batteries with a comfort level [When Possible] before they need charging.
As mentioned above, your Evic is a regulated mod and won't allow your batteries to discharge below the safe level. But it's never a bad Idea to charge more often and keep the battery at a higher voltage.
Probably the battery life on your Evic will last longer if you charge more often.