The battery life on the Luxe PM40 is going to vary depending on which of the coils you are using. However, overall for a small device with a 1800mAh battery, I found it to be pretty good. I think those that use it for an MTL-style vape with the 0.8-ohm will be pleasantly surprised by how long the battery lasts.The Luxe PM40, just as the name eludes to is good for a maximum of 40 Watts, and boasts an 1800mah internal battery, with adjustable airflow, USB Type-C Charge port with a 2Amp charge rate, a 0.69″ OLED screen, and of course adjustable wattage.