The leaked quick-start manual shows an induction coil at the back of the LG-built device, which would allow it to be charged by placing it on a charging mat rather than having to plug it in, CNET reported Monday.
The manual mentions a "wireless charger" and informs Nexus 4 owners they must only "use an approved model."
The manual was spotted after LG Australia released some product pages overnight, CNET said.
The Nexus 4 is expected to include 2 gigabytes of RAM, 8 gigabytes of storage, a 1.5 GHz quad-core Snapdragon processor, an 8-megapixel rear camera and near-field communications for wireless payments.
Google had intended to unveil the Nexus 4 at an event in New York Monday morning but postponed the event because of approaching Hurricane Sandy.
Google did not announce a rescheduled date, saying it would do so in the near future.