To charge your ecig battery you will need as a minimum a USB charger. You srew the charger onto the thread of your ecig and connect it to the USB port in your PC.
Charging will however be much faster if you buy an adapter, and plug the charger into a wall outlet.
You can not count on that any USB charger will charge you battery, even if the threads are the same.
You can also experience that the positive end of the charger is too long, so it presses the positive end of your battery into the case. Shuold this happen your atomisers will no longer be able to get at connection between your battery and your atomiser.
The chargers we sell are only ment to be used with batteries you buy from Pink Mule, and we do not offer any warranty on batteries that have been charged with a charger you did not buy from Pink Mule.