hey dr_frost_dk I have disassembled both my batteries and have the circuit board piece as well. But I have some questions. 1. Is wire from a USB cable good enough to use to join the batteries together and connect it to the circuit board ? I will just charge through Nokia USB, not through a charger like you. 2. Once you have connected everything, how do you connect the circuit board back onto one of the batteries ? I mean, you need to connect it back to the battery solidly so you can sit the battery at the back of the N900 correct ? How do you do that ? or do you leave the circuit board flopping around ? Or do you glue it back or something ? 3. Is there anything I need to do to the circuit board or battery terminals before I solder ? i.e. i read mentions of using tape or paper or something, is that required ?