The Tappecue comes with a standard US power supply adapter wall plug and a USB cable.
If no power outlet is available you can use a standard USB power bank to power it instead of the wall adapter.
We sell one on our website that is a 8400mah power bank that powers Tappecue about 36 hours.
http://www.tappecue.com/buy-now
Here are a couple links of other ones that we know work.
https://www.amazon.com/gp/product/B01BN0PD5W
https://smile.amazon.com/gp/product/B00C63PL62/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Since the Tappecue uses low power some power banks shut off or simply say PC Connected without getting enough power to the device.
If you have a battery bank at home, test it out first for an hour or so before using it to smoke.
Dual port battery power banks work well. You can always put in a USB light or other device that gives out more power and gaurantees it will stay on.
For V1 Tappecues that use a 9V barrell power supply you can use this cable to convert over your Tappecue to use the battery power bank.
https://www.amazon.com/gp/product/B01G3ERI42/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1