See
Chargers and Travel Hubs, note that eReader Outfitters is in the US or buy from iRex
here. The Travel Hub connects to the iLiad via the flat socket in the bottom of the device and provide powers, USB and Ethernet. The Charger connects to the Travel Hub to provide power.
It is normal for an EInk screen to retain its image without power.
To check that it is a supported device, see
iLiads on eBay are not always the official version.