Some of the early ones seemed to have some problems, but should be fixed by now. I found a couple for sale on Craigslist, $425 and $500, been up for awhile. I didn't any discussion in general googles around of use, or problems, so fair chance it just works, but wow, thats a chunk of change for battery charger unless you have a shop with a LOT of batteries needing charging, or a WIDE voltage range of batteries.