A charging system includes a power cable and a cooling tube. The power cable extends from a charging inlet to a battery pack to electrically connect the charging inlet to the battery pack. The charging inlet is configured to releasably couple to a mating connector of an external power source. The power cable includes a conductive core, an insulating layer surrounding the conductive core, and a metallic shield layer surrounding the insulating layer. The cooling tube is connected to a heat sink and extends along a length of the power cable. The cooling tube engages the metallic shield layer of the power cable to transfer heat from the power cable to the heat sink.