First off, can you use proper English? Nobody's going to help you if they have to spend 20 minutes trying to figure out what the hell you're saying.
What system are you trying to portablize?
forumfinder wrote:
ps some times i might need to check with a multimeter if the volts arint to high other wise i'll have to use kind of a big resistor

You don't want a resistor; you want a switching regulator.
_________________
ShockSlayer wrote:
Proggy's right.
ttsgeb wrote:
mfw prog was not only right, but 100% so.