E Cigarettes come with a 3 month warranty on the battery and charger, 1 month for the atomizer. Atomizers and rechargable batteries are made to the highest quality, however, if used incorrectly performance may deteriorate. Many users of electronic cigarettes carry spare atomizers and batteries. Rechargable batteries contain micro-electronic circuitry and micro-proccessors and should be stored carefully. It is not adviseable to keep them beside metallic or magnatised objects.