Since the Pegasus now has Temp Control, I am thinking of getting one. My question is how is the battery life on this device? Yes, I know that it will vary depending on what 18650 I choose to place in this device. Because of this please list the battery you are using with the device. I primarily will be using an Aspire 40A, Sony VTC 5, and Samsung 25r for the device if I get it. Hopefully that will help.