@raulgggg Hi there, thank you for reaching out to us! We recommend cleaning the chamber after use to minimize the smell. For the battery, we are offering the power bank that works well with the AirVape X. https://airvapeusa.com/collections/replacement-parts/products/power-bank-black. Feel free to use the promo code, AIRACCESSORIES, to get as much as 20% discount off of your entire order. If you have any questions, please let us know or reach us at cs@airvapeusa.com. Happy #AirVaping!