Improvements in luggage systems that better address the ways in which many people like to travel, in a style they feel most comfortable, while enjoying an unprecedented level of convenience which they will naturally welcome, while overcoming the shortcomings and drawback of prior art luggage systems, methods and technologies. Such improvements include a telescopic-handle assembly that supports a rechargeable battery power module, a set of USB DC electrical power supply ports and a DC power recharging port configured with the rechargeable battery module, and also a compression pad subsystem and a laundry bag subsystem which cooperate to provide improved performance and reduced complexity.