If you have a power adapter for 'wall plug to USB' (one came with my I-phone charger, but you can buy it as an accessory) you can use your passthrough all over the house. Also, if you have a power inverter that plugs into your car cigarette lighter, you can use it there either with the wall to usb adapter or alone if it has a designated usb plug-in. Black and Decker makes a good auto inverter with one two-prong outlet and one usb outlet for about $20. Vape-and-Go!