http://www.n-chargepower.com/page1.html?ncp Compatible laptops- http://www.valence.com/pdffiles/Compatibility_Guide.pdf I remember seeing this advertised some time ago and thought that it would be great for laptop users- especially anyone with aging laptops whose batteries are hard to find! Sites selling either of these units have 2 types of adapters, but I don't think either would work for either Duos or a 2400c. Anyone think that I could hack up a 2400c AC adapter and splice it into this battery system? The unit actually plugs into some other adapter, which in turn plugs into your laptop. It would be nice to have my 2400c run for 10 hours on battery alone ~_^ __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/