A user-replaceable e-liquid cartridge adapted to be inserted into or attached to a portable, personal storage and carrying case for an e-liquid e-cigarette PV is claimed. The combination of cartridge and case forms in normal use a portable, personal device for the storage and carrying of the PV and its re-filling with e-liquid. Also disclosed is a case (100, figure 6A) for refilling an electronic cigarette 1 with e-liquid. The case has a pivoting port 2 to allow the e-cigarette to be inserted. A removable cartridge 3 contains replacement e-fluid which can be fed to the e-cigarette via contained filling valve 13, 14. The removable cartridge may form part of the outer housing of the device and may also have a sensor for detecting the quantity of remaining liquid. The sensor may be connected to an output to auto-order replacement fluid. The device may also contain an electrical contact (5, figure 26) which can be used to recharge a battery of an appropriate e-cigarette when inserted into the device and the port 2 closed. Recharging and refilling may be automatic when the e-cigarette is inserted correctly. Many combinations of these and other features are claimed.
