Is this cool or what?
Adjustable 20 watt max switching mode adjustable voltage regulator (step down) with adjustable automatic current limiter (0-2A), and with display switchable to input voltage, output voltage, or output current draw or alternating display. I couldn't pass it up.
http://www.ebay.com/itm/170929163665?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649