How to know if the battery of my Nikon D3200 Camera is fully charged?

Sorry for the noob question, but how will i know if my d3200 is fully charged? Is it still going to blink, or just stop blinking or maybe turn of that small red light on the charger? Cause I'm kinda worried that if i didn't charge my camera well it will affect the lifespan of my battery. So can someone answer?

There's a little picture on the charge which shows a blinking light & says charging, and a steady light the says full.So… The battery is charging when it blinks & is fully charged when you get a steady light.

In any case lithium ion batteries do not have to be fully charged/discharged. Charging them part way does not affect their life.

Do you not have your user manual?

No help from the manual?