How to displaly nikon d3000's battery indicator?

I can't find the battery indicator. I don't know if my battery is full charged or low battery. Please tell me. It's nikon d3000.

Http://support.nikonusa.com/app/answers/detail/a_id/16534/~/user%27s-manual---d3000---guide-to-digital-photography online manual for the camera should tell you in there?

The way to know if your battery is fully charged is to charge it the night before you intend to use it.

Look on page 25 of your fine user manual if you want to check it later in the day