Thanks! I'm still in the process of designing it and collecting parts, so it will still be at least a few weeks. I have a question though: Will charging the 150 mAh batteries at 2.8VDC 350 mA work for single cell and charging at 5.6VDC 350 mA for dual cell work? I'm basically using the electronics out of a Sunpak AA/AAA NICD/NIMH peak charger for the charger.