It works for me when hooked up to my laptop. It goes slower depending on how many resources are being used. My G1 wouldn't charge while navigation was on for instance and my Nexus S barely charged at all while I was navigating.
Sent from my Galaxy Nexus using xda premium
Nexus 4 (Stock, Rooted)
Galaxy Nexus GSM - Stock 4.2 (from bixie), Nexus S (Stock 4.1.2), Samsung Vibrant (rooted, unlocked, hardware lock fixed, FFC mod Currently on an extended loan to a friend), G1 (Rooted running CM6, Amon_RA Recovery)
The next Nexus (Hopefully made by Sony or ***Nokia***)