The central unit of the Worldpay Hub acts as a charging module for both the tablet and keypad.
When charging, the keypad will display the charging icon in the top right of the keypad screen. To confirm that your tablet is charging detach it from the central unit and the reattach, upon reattachment you should feel a small vibration of the tablet. If your keypad is not charging please remove the keypad form the central unit, restart and then reattach. If this does not alieve the issue please contact a member of our UK Customer Support team.