PowerMaxPM3 Series Power Converter Charger (PM3 55A)

Works better than I could have imagined, using it as a battery maintainer while I do diagnostics and programming on my vehicles. Saved $300 over buying Schumacher's inc 700. This might not be marketed for programming but it holds a steady voltage at over 13vdc that's all the software needs to see. Plus to my great surprise there is a potentiometer at the sides and instructions on how to adjust it. Just simply a great deal. Not to mention I charged all the batteries of family members to make sure everyone is basically topped off.

Works flawlesslyVery pleased.