JP0160
Well-known member
I've got a voltmeter on my Magna I think I paid about 20$ at a R/C hobby shop. No external power required I have it directly between my battery + and -. My 12v usb was 9$ from Canadian tire, I just cut off the alligator clips and soldered on some extra wire and some terminals to connect direct to the battery. I got a 2.3A 12v to USB adaptor for a few bucks from the Source. All the power I need!