I only vape for celebrations or emergency meds (pain or nausea) & needed a lower cost, reliable battery. I picked Lookah after reading a few reviews of different brands from long term users. In the two weeks I’ve drained 4mgs (2, 2mg cartridges), it’s been great. Comfortable temp, easy charging. The user manual has tips about extending battery life which I love. Very satisfied. I’d recommend it to any friend or friend I haven’t met yet.