Very good battery life. PAX pax Vaporizer Design and Features. When it comes to the design, the Pax vape pen has a simple and elegant design. PAX Pax Mini Vaporizer. It comes with a large electric battery which can hold one g of dry herb. The distinctive form factor of its makes it look like a vape pen even in case it's not. It's smooth and compact and this really makes it very easy to travel...