I have found battery operated mosquito/insect repellent vaporizer manufacturer in India. The product name is BEAT. They provide battery and charger incorporated within the unit and it is light weight. I have it with me. It is nice and very useful. When I go outside, when inside the car, I face lot of mosquito issues. Even during nights, there are many times power cuts and this product helps me in protecting from mosquito bites by working continually and provides me good night sleep. This product helps me a lot. It is like a mini UPS repellent which is compatible with most of the repellent liquid containers, which are manufactured in India. Excellent product. Please visit their site.
http://rennovasolutions.com