Sinewave has been producing their chargers and other goodies for quite a few years now and it all seems to be well designed and produced. I've been involved with the charging of large batteries, as well as making my own dynamo lights and standlights, so I've been intrigued by their products. Even talked with one of the Sinewave folks at a NAHBS, and they seemed to be on top of the technical stuff! Should work out well for you.

Steve in Peoria