N5380L wrote:
Walter
I know that, but this cord is a step down transformer also, 12V to 5v usb, from what I learned I just do not know the size of the plug, so the ???
thanks
Ciao
 
Ciao, I've re-read this thread.  Still not sure I'm getting it...but is this right?:  You wish to power a Stratux using one of our old T-Power 12 volt batteries.  And based on the image you sent, I presume you have the barrel style battery, not the USB out battery.  And now you need to know the tip size for that battery, so you can buy or build a 12-volt to 5-volt cable.  If this is the case...I do not recommend this approach...much cheaper, easier, and better to just pick up a USB power pack.  We have some on our store for $30.  There are other versions available on Amazon or Walmart that will do a great job.