For this project i will be using 12 volt batteries with 3 day battery life plus its rechargeable input DC12.6v output DC12v1800mAh this will power all L.E.D.s and the E.L sheet plus its rechargeable i will post pics today of progress .... and to answer your questions about the el nike strap i used the mini converter 3 volt with 2 LIR2032 batteries this mini 3 volt mini converter dose not power all lights....... the converter is to small.......... If you can please look up (classic mini pipsqueak) driver at SeattleLumin.com. this will power all of your electronics trust me and it is a very small unit but powerful.