PulseTech Xtreme Charger
What with the lab and a fleet of small craft, I use and abuse a lot of 12-volt batteries. Wasn't I tickled with how well the $100 Xtreme "five-stage maintenance" Marine Charger tested and then, when possible, charged and desulphated my scraggly collection, all the while telling me what it was up to with its easily understood LED banks. Desulphation is a bit mysterious, but my batteries seemed to get sparky, and PulseTech's Web site has some solid testing as to its effectiveness.
This article originally appeared in the February 2008 issue of Power & Motoryacht magazine.