Just a quick note, most lithium ion chargers are pretty standard. I don't have a nokia charger but I use one for my camera (FUJI) and just manually wire the leads to the batteries I'm using. Make sure you get + and - right, and the third temp sensor (or for more proprietary batteries, communications) lead hook it up appropriately. The nokias seem to only use it as an analog temp reading, and the charger terminates properly @ 4.2V on its own.