My Isatphone when docked shows the message "Enable Charging?"

This behaviour of the Isatphone is typical (and can be intermittent) when it is connected to a personal computer like a Windows PC through a USB cable. The handset will let you choose to enable charging or not.

This is not expected when the handset is docked to a Beam Inmarsat docking station but if this happens, just choose Yes to enable charging. The handset somehow thinks it is talking to a personal computer. This is not a fault.