Can a phone or tablet have different power requirements from what is on their charger topic

I'm an American and I will be in Japan for a few weeks soon and I intend to bring my Nexus 9. The USB wall adapter that came with it is rated for 100-240V and 50-60Hz. Japan uses 100V/50Hz so I know the adapter will be fine, but I'm not sure if there's possibly a different power requirement/tolerance for the tablet itself.

So my question is, if my power adapter (a typical wall outlet to USB type) can support Japanese power, is there any chance of my tablet not supporting it?