Just a word of caution for those of you who might consider using a pass-thru to save on batteries... I bought the USB variable volt pass-thru from vapor beast about a month ago. It works like the reviews say,,,ok but a little tricky on the button. I bought it because it is made for a USB port where the other brands that look the same say you must use a wall plug adapter because the unit will damage your computer. The one from Vapor Beast won't work with a wall plug adapter or cig lighter adapter. So I figured it must be designed like they say and I vaped away plugged in to my laptop. Well after several weeks I needed to use that port for a camera connection. Turns out that the port is fried. It will not detect a flash drive or anything. It is only good as a power or recharge port. For what I paid (12.00) I didn't expect much and I won't be bothering Vapor Beast about it. Although I did go back and leave a review with this information (which isn't showing up). Just thought I would throw this out there as a heads up for anyone looking into these. If I had it to do over I would by the cheaper one and use my phone charger adapter and save my PC. But; hindsight is 20/20. Peace.
