Anker is offering free power supply items for referring friends to signup for their referral promotion (yes, this is my referral link). The referral window closes tonight at 11:59pm PDT (2:59am EDT tomorrow). -If 5 friends signup you’ll get a 20W 2-Port wall charger ($9.99 on Amazon) -If 10 friends signup you’ll get an Astro Want to continue reading this post? Click here!