I am quite new and am still in the process of getting all my tool's and gear. I am looking at various battery chargers. Pokeing around the diy powerwall folks forums and blogs it appears that the opus BT-C3400 is the most recomended charger in thoes circles. I have also been looking at all the various hobby chargers. What I would like is to find a charger that is programable so I can set the full charge at only 4 volts instead of 4.2. by not charging all the way to full I should see dramaticly better cycle longevity instead of only a few hundred cycles I should have 1000's of cycles and much happyer batteries. Does anyone know of a fully programable battery charger ?