You don't have to :) Your Charger Card comes with $5 loaded on it each semester - so you automatically get $5 worth of printing and copying money. When you printed the $5 was reduced by whatever amount you used. When you print .10 is taken off of your card for each black & white printed/copied page and .25 is taken off for each color printed/copied page. If you run out of money on your card, you can refill it by going to the Charger Card machine on your campus.
Updated December 2015