They are model-specific. You need to know what model you have.
If you have a popular standard model number then try VaporSearchUSA.net and call shops near you to see if any has the kind of charger cable you need
If no shops near you then check LiteCigUSA.net, Liberty-Flights.com, Cignot.com but don't buy a charger cable based only on what it looks like! You need to know your model. Some charger cables and ecigs are opposite electrical polarity and will actually melt incorrect
batteries that seem to fit in their charger cable.
If you have some "name brand" then you need to go to "name brand"'s site - you can call them and see if they have a local
shop or order the charger cable by phone or web from them.